Cinematography: Third Edition
By Kris Malkiewicz and M. David Mullen
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About this ebook
Since its initial publication in 1973, Cinematography has become the guidebook for filmmakers. Based on their combined fifty years in the film and television industry, authors Kris Malkiewicz and M. David Mullen lay clear and concise groundwork for basic film techniques, focusing squarely on the cameraman's craft. Readers will then learn step-by-step how to master more advanced techniques in postproduction, digital editing, and overall film production.
This completely revised third edition, with more than 200 new illustrations, will provide a detailed look at:
- How expert camera operation can produce consistent, high-quality results
- How to choose film stocks for the appearance and style of the finished film
- How to measure light in studio and location shooting for the desired appearance
- How to coordinate visual and audio elements to produce high-quality sound tracks
Whether the final product is a major motion picture, an independent film, or simply a home video, Cinematography can help any filmmaker translate his or her vision into a quality film.
Kris Malkiewicz
Kris J. Malkiewicz, author of the classic work Cinematography, is a graduate of the prestigious Polish State Film Academy. He helped to design the film department of the California Institute of the Arts and taught film at the Film Division of The Polytechnic in London, England.
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Cinematography - Kris Malkiewicz
OTHER BOOKS BY KRIS MALKIEWICZ
Film Lighting: Talks with Hollywood’s Cinematographers and Gaffers
FIRESIDE
Rockefeller Center
1230 Avenue of the Americas
New York, NY 10020
www.SimonandSchuster.com
Copyright © 1973, 1989, 2005 by Simon & Schuster, Inc.
Copyright renewed © 2001
All rights reserved, including the right of reproduction in whole or in part in any form.
Revised Fireside Edition 2005
FIRESIDE and colophon are registered trademarks of Simon & Schuster, Inc.
For information regarding special discounts for bulk purchases, please contact Simon & Schuster Special Sales at 1-800-456-6798 or [email protected]
Designed by Ruth Lee Mui
Manufactured in the United States of America
1 3 5 7 9 10 8 6 4 2
Library of Congress Cataloging-in-Publication Data is available
ISBN-13: 978-0-7432-6438-9
ISBN-10: 0-7432-6438-X
eISBN-13: 978-1-4391-0562-7
ACKNOWLEDGMENTS
We wish to thank Bob Rogers, whose collaboration was fundamental in the realization of the first edition of this book. We would also like to thank several friends whose advice and encouragement contributed to the first edition: Brian Moore, Pat O’Neill, Haskell Wexler, Don Worthen, Frank Stokes, David Smith, Roy Findlon, and Milan Chupurdija.
We are deeply grateful for the help given by several generous people in the preparation of the second edition. Our thanks go to Francisco Menendez for his editorial help, and to Benjamin Bergery, Myron Emery, Grant Loucks, Larry Roberts, and Craig Smith for their expertise in the various areas of filmmaking.
For this third edition, we would also like to thank Geoff Boyle and his Cinematography Mailing List (CML), Ed Coleman, Lisle Foote, Mitch Gross, Annette Hobday, Bill Hogan, Jeff Kreines, Mike Most, Matt Nicolay, Chip Ritter, Craig Smith, Ira Tiffen, and Mark Weingartner.
Finally, we are grateful to the manufacturers, suppliers, and laboratories that contributed photographs, charts, and information.
CONTENTS
Acknowledgments
Preface to the Third Edition
1. Cameras
2. Film Technology
3. Filters and Light
4. Lighting
5. Image Manipulation
6. Sound Recording
7. Postproduction
8. Special Shooting Techniques
9. Production
Glossary
Bibliography
Index
PREFACE TO THE THIRD EDITION
Welcome to the Digital Age. In the decade since the last edition, we have seen radical changes to filmmaking techniques in the fields of picture and sound editing, sound recording, and visual effects. While at first only well-budgeted studio productions could afford these new digital tools, many of them are now available to the general consumer.
With the introduction of 24 fps progressive-scan video cameras in the year 2000, we finally saw digitally captured
moving images that felt more filmlike than those that previous generations of video technology were capable of delivering. Many experts
jumped the gun and predicted the death of film. In particular, they suggested that the 16mm format, for years the only affordable alternative to 35mm for projects traditionally shot on film, would soon be gone.
However, 16mm continues to be a popular format for a number of reasons. For one thing, advances in film emulsion technology have considerably improved the grain and sharpness of the 16mm image. Digital technology has improved how the format looks transferred to video and even allows a high-quality method of copying the image onto the 35mm format for theatrical projection. So even though some filmmakers may be using digital video instead of film these days, 16mm has established itself as an excellent format for those with a modest budget who still need to get as close as possible to the look of 35mm film.
The truth is that motion picture production, postproduction, distribution, and exhibition have been using a hybrid film-digital system for years now. Film is still the primary method of capturing moving images and showing them in theaters, yet converting that image into a digital format for editing, visual effects manipulation, color-correction, and final distribution to home video and broadcast and cable television systems is unavoidable. Therefore, film and digital are partners more than competitors.
This book concentrates on the work of the cinematographer—the person responsible for the photography of a motion picture. It touches briefly on techniques of sound recording, cutting, and production logistics, because some knowledge in these areas is necessary for the serious cameraperson, especially in view of the increasing trend toward personal filmmaking, where a single creative individual performs the multiple functions of a film crew.
This edition has been updated to reflect current production trends and changes due to new technologies, especially as they relate to the 16mm format. However, the heart of cinematography—and this book—continues to be traditional photographic and lighting concepts. If you want to understand how to create an image, you have to understand light and all of its properties, because there is no image without it. Therefore, many of the techniques discussed in this book are applicable to filmmakers working outside the realm of 16mm.
In the continuing quest to be more innovative and experimental, it is extremely useful to know the existing principles before one tries to break them. The only really important outcome of filmmaking is what happens in the heads of the audience members. That is what counts. But the long and painstaking route to the audience begins with light and continues through the lens and film in a movie camera. This book will try to help you take that route and record your creative vision with fewer frustrating disappointments and more competency and joy.
1
CAMERAS
The cinematographer’s most basic tool is the motion picture camera. This piece of precision machinery comprises scores of coordinated functions, each of which demands understanding and care if the camera is to produce the best and most consistent results. The beginning cinematographer’s goal should be to become thoroughly familiar and comfortable with the camera’s operation, so that he or she can concentrate on the more creative aspects of cinematography.
This chapter covers many isolated bits of practical information. However, once you become familiar with camera operation, you will be able to move on to the substance of the cinematographer’s craft in subsequent chapters. In the meantime, you are well advised to try to absorb each operation-oriented detail presented in this chapter, because operating a camera is all details. If any detail is neglected, the quality of the work may be impaired.
PRINCIPLE OF INTERMITTENT MOVEMENT
The film movement mechanism is what really distinguishes a cinema camera from a still camera. The illusion of image motion is created by a rapid succession of still photographs. To arrest every frame for the time of exposure, the principle of an intermittent mechanism was borrowed from clocks and sewing machines. Almost all general-purpose motion picture cameras employ the intermittent principle.
Intermittent mechanisms vary in design. All have a pull-down claw and pressure plate. Some have a registration pin as well. The pull-down claw engages the film perforation and moves the film down one frame. It then disengages and goes back up to pull down the next frame. While the claw is disengaged, the pressure plate holds the film steady for the period of exposure. Some cameras have a registration pin that enters the film perforation for extra steadiness while the exposure is made.
Whatever mechanism is employed requires the best materials and machining possible, which is one reason good cameras are expensive. The film gate (the part of the camera where the pressure plate, pull-down claw, and registration pin engage the film) needs a good deal of attention during cleaning and threading. The film gate is never too clean. This is the area where the exposure takes place, so any particles of dirt or hair will show on the exposed film and perhaps scratch it. In addition to miscellaneous debris such as sand, hair, and dust, sometimes a small amount of emulsion comes off the passing film and collects in the gate. It must be removed. This point is essential. On feature films, some camera assistants clean the gate after every shot. They know that one grain of sand or bit of emulsion can ruin a day’s work.
The gate should first be cleaned with a rubber-bulb syringe or compressed air to blow foreign particles away. Cans of compressed air must be used in an upright position; otherwise they will spray a gluey substance into the camera. When blowing out the aperture, it is recommended that you spray from the open lens port side, with the mirror shutter cleared out of the way, through the aperture, rather than from inside the threading area into the aperture. This helps prevent blowing particles into the mirror area. An orangewood stick, available wherever cosmetics are sold, can then be used to remove any sticky emulsion buildup. There is also an ARRI plastic skewer
for this job, bent at the end to allow you to get the inner edges of the aperture better. The gate and pressure plate should also be wiped with a clean chamois cloth—never with linen. Never use metal tools for cleaning the gate, or, for that matter, for cleaning any part of the film movement mechanism, because these may cause abrasions that in turn will scratch the passing film. Do not use Q-tips either, as these will leave lint behind.
The gate should be cleaned every time the camera is reloaded. At the same time, the surrounding camera interior and magazine should also be cleaned to ensure that no dirt will find its way to the gate while the camera is running.
The intermittent movement requires the film to be slack so that as it alternately stops and jerks ahead in one-frame advances, there will be no strain on it. Therefore, one or two sprocket rollers are provided to maintain two loops, one before and one after the gate. In some cameras (such as the Bolex and Canon Scoopic), a self-threading mechanism forms the loops automatically. In Super-8 cassettes and cartridges, the loops are already formed by the manufacturer. On manually threaded cameras, the film path showing loop size is usually marked.
Too small a loop will not absorb the jerks of the intermittent movement, resulting in picture unsteadiness, scratched film, broken perforations, and possibly a camera jam. An oversize loop may vibrate against the camera interior and also cause an unsteady picture and scratched film. Either too large or too small a loop will also contribute to camera noise.
Camera Speeds
The speed at which the intermittent movement advances the film is expressed in frames per second (fps). Each frame exposed is a single sample of a moving subject, so the higher the sampling rate, that is, the faster the frame rate, the smoother the motion will be reproduced. To reproduce movement on the screen faithfully, the film must be projected at the same speed as it was shot. Standard shooting and projection speed for 16mm and 35mm is 24 fps; standard speeds for 8mm and Super-8 are 24 fps for sound and 18 fps (or 24 fps) for silent.
If both the camera and the projector are run at the same speeds, say 24 fps, then the action will be faithfully reproduced. However, if the camera runs slower than the projector, the action will appear to move faster on the screen than it did in real life. For example, an action takes place in four seconds (real time) and it is photographed at 12 fps. That means that the four seconds of action is recorded over forty-eight frames. If it is now projected at standard sound speed of 24 fps, it will take only two seconds to project. Therefore, the action that took four seconds in real life is sped up to two seconds on the screen because the camera ran slower than the projector.
The opposite is also true. If the camera runs faster than the projector, the action will be slowed down in projection. So to obtain slow motion, speed the camera up; to obtain fast motion, slow the camera down.
1.1 Arriflex SR3 camera. (Courtesy of ARRI Group)
1.2 Arriflex camera gate.
1.3 Arriflex intermittent mechanism. (Courtesy of ARRI Group)
This variable speed principle has several applications. Time-lapse photography can compress time and make very slow movement visible, such as the growth of a flower or the movement of clouds across the sky. Photographing slow-moving clouds at a rate of, say, one frame every three seconds will make them appear to be rushing through the screen when the film is projected at 24 fps. On the other hand, movements filmed at 36 fps or faster acquire a slow, dreamy quality at 24 fps on the screen. Such effects can be used to create a mood or analyze a movement. A very practical use of slow motion is to smooth out a jerky camera movement such as a rough traveling shot. The jolts are less prominent in slow motion.
To protect the intermittent movement, never run the camera at high speeds when it is not loaded.
When sound movies arrived in 1927, 24 fps was firmly established as the standard shooting and projection rate, although it was a frame rate occasionally used by Silent Era filmmakers. It is not actually the ideal frame rate for the recreation of motion, as it provides barely enough individual motion samples over time to create the sensation of smooth, continuous motion when played back. However, it’s become the frame rate that audiences are most accustomed to seeing in movies and has become an integral part of the film look
that many people discuss these days as they attempt to get video technology to emulate film. The main artifacts to this fairly low frame rate are strobing and flicker. Strobing is the effect of sensing that the motion is made up of too few samples and therefore does not feel continuous. One of the ramifications is that it is sometimes necessary to minimize fast movement, such as when panning the camera across a landscape; otherwise the motion seems too staccato, too jumpy. Flicker happens when the series of still images are not being flashed quickly enough for the viewer to perceive the light and image as being continuously on.
The solution generally has been for film projectors to use a twin-bladed shutter to double the number of times the same film frame is flashed before the next frame is shown. So even if the movie was shot and then projected at 24 fps, the viewer is seeing forty-eight flashes per second on the screen.
SHUTTER
A change in camera speed will cause a change in shutter speed. In most cameras the shutter consists of a rotating disk with a 180°cutout (a half circle). As the disk rotates it closes over the aperture, stopping exposure and allowing the movement to advance the film to the next frame. Rotating further, the cutout portion allows the new frame to be exposed and then covers it again for the next pull-down. The shutter rotates constantly, and therefore the film is exposed half the time and covered the other half. So when the camera is running at 24 fps, the actual period of exposure for each frame is 1÷48 second (half of 1÷24). Varying the speed of the camera also changes the exposure time. For example, by slowing the movement by half, or to 12 fps, we increase the exposure period for each frame, from 1÷48 to 1÷24 second. Similarly, by speeding up the movement, doubling it from the normal 24 fps to 48 fps, we reduce the exposure period from 1÷48 to 1÷96 second. Knowing these relationships, we can adjust the f-stop to compensate for the change in exposure time when filming fast or slow motion.
A change in the speed of film movement can be useful when filming at low light levels. For example, suppose you are filming a cityscape at dusk and there is not enough light. By reducing your speed to 12 fps, you can double the exposure period for each frame, giving you an extra stop of light that may save your shot. Of course, this technique would be unacceptable if there were any pedestrians or moving cars in view; they would be unnaturally sped up if the film were projected.
1.4 180° rotating shutter.
Some cameras are equipped with a variable shutter. By varying the angle of the cutout we can regulate the exposure. For example, a 90° shutter opening transmits half as much light as a 180° opening. Some amateurs make fade-outs and fade-ins on their original film by using the variable shutter, assuming it can be changed smoothly while the camera is running. Professionals generally have all such effects done in the lab.
Since changing the camera speed also changes the exposure, you can compensate for a speed change in midshot (called speed ramping) by adjusting either the f-stop or the shutter to maintain the correct exposure. For example, a speed change from 24 fps to 12 fps would cause twice as much light to reach the film by the time it was running at 12 fps, so you could simultaneously close down the shutter angle from 180° to 90° as the frame changes, thus counteracting the exposure increase. However, the rendition of motion will be different when you alter the shutter angle, not just when you alter the frame rates.
Shutter movement is directly responsible for the stroboscopic effect. Take the example of the spokes of a turning wheel. Our intermittent exposures may catch each succeeding spoke in the same place in the frame, making the spinning wheel appear to be motionless. The camera may even catch each spoke in a position counterclockwise to the previous spoke captured, making the wheel look like it is running in reverse. Another variation, called skipping, results from movement past parallel lines or objects, such as the railings of a fence. They may appear to be vibrating. These effects will increase with faster movement and with a narrower shutter angle.
Exposure time controls the amount of motion blur recorded on each frame; due to the low sampling rate of 24 fps, a certain amount of blur is needed to make a moving object on one frame visually blend
with the next frame. Too little blur and the motion seems too sharp
and the viewer becomes more aware as to how few motion samples there really are; it no longer feels continuous but instead steppy.
Therefore, shooting at 24 fps with a closed-down shutter, like at a 45° or 90° angle, will cause faster motion to strobe heavily. This has been used as a creative effect by some filmmakers, since it adds a certain nervous, jittery energy to action scenes. The movie Saving Private Ryan is the most famous example of this technique; many of the battle scenes were shot handheld with a 45° shutter angle. It’s also a useful technique when shooting spraying water or falling rain, if you want to see each droplet more clearly.
1.5 Arriflex SR3 adjustable shutter.
1.6 Stroboscopic effect.
There are other reasons to use a shutter angle other than 180°, such as for filming TV screens or lights that pulse with their AC current. (See chapter 8.)
VIEWING SYSTEMS
In many cameras the shutter performs a vital role in the viewing system. The front of the shutter has a mirror surface that reflects the image into the viewfinder when the shutter is closed. The great advantage of this reflex system is that all the light goes alternately to the film and to the camera operator’s eye, providing the brightest image possible. The surface of the mirror shutter should be cleaned only with an air syringe or gently with compressed air; nothing should be allowed to touch it.
Other systems (such as the Bolex Reflex) use a prism between the lens and the shutter so that a certain percentage of the light is constantly diverted to the viewfinder. The disadvantage is that it reduces the amount of light going both to the viewfinder and to the film, since the beam is split. An exposure compensation is required to allow for the light stolen
from the film by the viewing system. It is usually very slight. For example, in the Bolex Rex-5 the loss is about a third of a stop. You should consult the operator’s manual for the specific camera to learn the exact compensation.
Be aware that just as the reflex camera allows light coming through the lens to reach both the film and the camera operator, it also allows light coming back through the eyepiece to reach the film. Therefore, you must keep your eye pressed against the viewfinder while filming to prevent any light-leak from fogging your image; if you are not planning on looking through the viewfinder during the take, you must seal off the eyepiece.
1.7 Arriflex mirror shutter viewing system. (Courtesy of ARRI Group)
1.8 Arriflex viewing system. A: Shutter open—all light passes to film. (Courtesy of ARRI Group)
1.8 Arriflex viewing system. B: Shutter closed—all light passes to viewfinder. (Courtesy of ARRI Group)
The viewing systems discussed so far allow the cameraperson to look through the taking lens. Many cameras of older design do not have a reflex viewfinding system. As a result, the film in the camera may not receive exactly the same image that the separate viewfinder (usually off to one side of the camera) sees. Referred to as parallax, this is especially a problem when shooting close with a wide-angle lens. However, most nonreflex cameras have an adjustment that can partly correct for parallax.
Video Assist
Also referred to as a video tap, this is a system where some of the light going to the viewfinder is also received by a tiny internal video camera; that image can then be sent to a TV monitor, either with cables or transmitted by UHF (by using an additional device). This signal can even be recorded to videotape for temporary playback on the set. The image quality of this video image is generally very poor, but it allows you to see the framing without actually looking through the viewfinder. This is mainly done so that people other than the camera operator can see the exact shot during the take. However, it is also useful when it is physically impossible to look through the camera viewfinder during the take, like when the camera is mounted on a moving vehicle, a Steadicam, or a remote-controlled crane. Occasionally the camera assistant will have a small LCD monitor mounted to the camera, which enables the assistant to see what the operator is framing. This can come in handy when shooting a scene on a telephoto or macro lens in which the operator is panning from one object to another and the focus needs to be adjusted as each object comes into view. The portable LCD screen can even be used by the operator when doing a complex dolly move, perhaps with an extreme boom up or down combined with a pan, when it may be too difficult to continually keep the eye against the viewfinder.
1.9 Parallax effect.
MOTORS
The film transport mechanism, the shutter, and other moving camera parts are operated by the motor. There are two basic types of motors, spring-wound and electric. Spring-wound cameras run approximately twenty to forty feet of film per wind. The advantages include a compact design and reliable performance under difficult conditions such as cold weather.
Electric motors are available in a variety of designs. The five types that are generally used are: (1) variable speed (wild
); (2) inter-locked; (3) stop frame (time-lapse); (4) constant speed; and (5) crystal speed, which is the most commonly used, especially for sync-sound production. Variable speed motors have an adjustable speed control that may range from 2 to 64 fps or more. (Above 64 fps are considered high-speed motors.) The interlocked motor synchronizes the camera with other devices, such as back or front projectors. The stop frame or time-lapse motor is usually connected with an intervalometer to allow the setting up of whatever exposure intervals are needed for time-lapse photography (such as filming the growth of plants). The constant speed motor is designed to run at a set speed, such as 24 fps, with some precision.
The most advanced type of synchronous speed motor is designed with a crystal control to regulate the speed with extreme precision. When the camera motor and the tape recorder are both equipped with crystal controls, you can film in sync
with no cables connecting the camera to the recorder. Furthermore, several crystal control cameras can be held in sync to one or more crystal recorders, allowing for multicamera coverage with no cables to restrict the distances between them. Some crystal control motors even combine several functions, allowing the operator to change from constant speed crystal-sync to variable wild
speeds or single frame at the touch of a switch. The best controls allow a wide variety of speeds to be shot precisely at crystal-sync, necessary for filming under certain pulsing AC light sources at high frame rates for a slow-motion shot.
BATTERIES
Most 16mm camera motors operate on DC current supplied by batteries. Nickel-cadmium (NiCad) and nickel metal hydride (NiMH) are widely used; lithium ion batteries are becoming more common. Their life expectancy varies, depending on the conditions of use and maintenance, but on the average about five hundred cycles of recharging and discharging should be expected.
There are slow overnight
chargers that require fourteen to sixteen hours, quick chargers that will charge batteries in half this time, and truly fast chargers that can do the job in one hour.
It is essential to familiarize yourself with the charger on hand. Some chargers will damage a battery when left to charge for longer than required. It is advisable to have at least four charged batteries on hand so that they can be rotated with enough time for slow charging.
Batteries come in three types: belt, block, and on-board. The battery belt, consisting of built-in nickel-cadmium cells, is a convenient power source for portable 16mm and 35mm cameras, especially when shooting handheld. In situations where mobility is less of an issue, longer-lasting but heavier block batteries may be used. Many modern 16mm cameras use small on-board batteries that clip onto the rear or side of the camera. All Super-8 cameras house the batteries (usually AAs) inside the camera body.
Make sure the voltage of the battery used matches what your camera motor uses. The 16mm Arri SR1 and SR2, and the Aaton XTRprod and A-Minima, for example, use a 12-volt battery, but the Arri SR3 uses a 24-volt battery (as do many 35mm cameras). Many battery belts and block batteries can be switched between 12V and 24V, or between 12V and 16V. Plug into the correct voltage connector on these batteries.
MAGAZINES
Most of the smaller 16mm cameras will house up to 100-foot loads (on metal daylight spools) inside the camera body. Modern 16mm cameras are usually equipped with film magazines capable of holding up to four hundred feet of film on a plastic core instead of a metal spool. Four hundred feet of film stock in a camera running at 24 fps will give you eleven minutes of footage. The Aaton A-Minima uses a unique 200-foot plastic spool design that must be loaded in darkness. There is an optional 1,200-foot magazine for the 16mm Panaflex Elaine and an 800-foot magazine made for the Aaton XTRprod and Arri SR3 cameras.
Having several magazines allows for a more efficient production, particularly when more than one type of film stock is used on a given day. The camera assistant loads several magazines in advance so that the magazine change will slow down the production minimally.
Remember, when considering magazines, the two decisive factors are capacity and design. The shape and placement of the magazine is sometimes important too. For most shooting situations it doesn’t matter, but when you are shooting in cramped quarters, such as from the cockpit of a plane or from under a car, the bulkiness of the camera can make a difference. Here a cameraperson may want a camera with magazines that are smaller or that mount to the back rather than the top. The operator may even want to use one of the smaller cameras that only allow the 100-foot daylight spool loads.
Most magazines have to be loaded in total darkness. The smaller loads available on daylight spools require only subdued light when loading; however, these are not generally used in modern sync-sound cameras, as they increase the noise level while the camera is running. Film not on daylight spools necessitates either a darkroom or a changing bag. The changing bag must be of adequate size and absolutely light-tight. It should be stored in a special case or cover to keep it spotlessly clean and dust free. (Don’t let your dog sleep on it.) Any hairs, dirt, or dust in the changing bag can easily enter the magazine being loaded and from there travel to the gate. Even the tiniest of dust specks are visible on a 16mm frame because of the higher magnification of the image.
Before loading an unfamiliar magazine, practice loading it with a roll of waste film (called a dummy load) that you don’t want, first in the light and then in the dark, to simulate the loading of unexposed stock.
Some magazines have their own take-up motors to wind up the film as it reenters the magazine after passing through the camera. Such motors should be tested with a waste roll before the magazine is loaded with unexposed film. Run this test with the battery to be used in filming. This test is advisable because a battery may sometimes have enough charge to run a camera with a small 100-foot internal load or an empty magazine but then fail to operate the magazine and camera when it is loaded.
Also, before loading, clean the magazine with compressed air, camera brush, and a piece of sticky paper in order to remove dust, film chips, or hair, and make sure that the rollers are moving freely. (Never wear a fuzzy or hairy sweater when cleaning camera equipment or in the darkroom.) It is a good idea to do a scratch test where you run some new film through the camera to see if the magazine or the gate is scratching the film. You examine the strip of film afterward with a light and magnifier to look for any faint abrasions in the surface of the emulsion or base. Obviously this piece of film becomes waste at this point, having been exposed to light.
After loading the magazine it is advisable to seal the lid with 1-inch camera tape. This is partly to prevent light leakage on old magazines, but mainly to prevent an accidental opening, especially if the loaded magazine is dropped. When you are loading magazines in a hurry, it is easy to confuse loaded ones and unloaded ones. Taping and labeling the loaded magazines immediately after loading will save you the annoyance of opening a supposedly empty magazine and ruining a roll of film.
It is customary to stick a piece of 1-inch white tape on the side of the magazine with the following information:
number of that magazine
camera roll number
type of film stock
emulsion and batch number
length of the roll
date
title of the film
name of the production company
This will help in the preparation of a camera report to accompany the film to the lab. Later this label is often taken right off the magazine and put onto the film can holding the exposed roll. You might also put a label on the magazine with special processing instructions, such as PUSH ONE STOP, as a reminder to everyone using the camera and to whoever later writes the camera reports and work order for the lab.
Despite the most careful cleaning and loading, even the finest camera designs will occasionally jam. The film will stop advancing somewhere along its path and the oncoming film will continue to pile up at that point, creating a salad
of twisted and folded film. If the camera jams, remove the film from the camera interior, checking carefully to see that chips of broken film are not