Modern Classic SLR Series :
Canon EOS-1N Series AF SLR camera
Film Transport & Technologies behind

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Overview - Film Transport

The film transport system of the Canon EOS-1N (and for that matter, the original EOS-1 as well) are adopting the successful design concept of the multi-motors system used first seen the 1986's
manual focus Canon T90. The advantage brought into camera design has ensured each motor will deliver improved level of reliability, efficiency and simplifying the camera circuitry as each provides individual dedicated function This basic configuration has since, replicated by other Japanese camera manufacturers later.

The whole idea for the Canon EOS-1n is centered on a fully automatic film transport system and how to make it more efficient and reliable. Besides, for the pros who are seasoned users by profession, Canon thought the time has matured for pro-use cameras should also have camera operations unrelated to photographic expression should be automated so that the user can concentrate on taking pictures.

So, the EOS-1N is set for automatic film rewind, high-speed film rewind, and complete rewinding of the film leader. With the addition of expanding the basic further via Custom Function usage. For an example, the CF-1 can be set to prevent automatic rewind or to enable silent (low-speed) rewind, and Custom Function CF-2 can be set to leave out the film leader after the film is rewound etc. So, from film loading, automatic film advance, to automatic film rewind and even manual film rewind in mid-roll, various sequence has been either improved upon from the previous EOS-1 or has developed some new features to deliver top class performance and reliability.

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In less than sub 10 seconds, from start to finish - 100m sprint event in any major sports meet can be another challenging task for photographers. It won't have another 50 laps like in F-1 or Motor GP - and it won't have another rematch other than another meet. The finish line is all that matter. Low available light, freeze action + many many factors to be considered by photographers.

Credit: Image courtesy of another good friend, Mr. Vincent Thian® Photo Editor of AP (Associated Press, regional bureau/Malaysia) on an assignment to cover the international sport event. Vincent also maintains an AsianphotoGS.org. Selective of his older works can also be found at a section of Windows in MIR site or at his Portfolio in MIR Image copyright © 1996-2005. All rights reserved. Please respect the visual property of the contributing photographer. Use of image does not suggest direct association of actual equipment but rather for purpose of visual illustration only.

Actually, the basic mechanical construction found in the EOS-1 has been retained. However, the EOS-IN'S film transport performance is better because the gear ratios have been optimized and the driving time of each motor has been shortened. Read the innovative auto switch of coreless motor system at the box below to understand how it works.. The EOS-1N rear inner section comprised of film chamber at the left, guide rails and the film takes-up spool. Film flatness is ensured by the film back pressure plate. Other than film loading, the entire process from advance to rewinding is automatic. Naturally, automatic means it has a drive to automate the process and it synchronizes all other related components to make an exposure. For an example, when the PBP-E1 is attached, it will enhance further in delivering both film advance and rewinding speed. The main difference is the performance ratio and reliability issue for long lasting, continuous use in all conditions.

The Three Motros System in the Canon EOS-1N, illustration map (66k) Loading ..
2 & 3-motors system

The EOS-1N's built-in motor drive is basically a two-motor system consisting of a high-power coreless motor (M1) for film advance and a high-performance coreless motor (M2) for the shutter, the mirror and film rewind. When Power Drive Booster E1 is attached, the camera automatically switches over to a three-motor system with the camera's coreless motor (M2) serving exclusively as the film rewind motor and the Booster's high-power coreless motor (M3) dedicated to the shutter and quick-return mirror. The three-motor system takes full advantage of the high-speed mechanism to attain a maximum shooting speed of 6 frames per second. NOTE: -The EOS-1NRS has a fixed mirror as well as a double shielded curtain, it works slightly differently with the reassignment of duties of these coreless motors.

Note: For the EOS-1N RS model, the shutter unit's dual-layer light blocking lever is driven directly from the front plate side by the M2 motor

When you require the best combination, get a Power Drive Booster E1 attached, the Canon EOS-1N will, capable of shooting up to 6 frames per second in the One-Shot AF and Manual Exposure modes. (It was 5.5 fps with the previous EOS-1 model). With predictive AF, a maximum 5 fps (compared to the EOS-1's 4.5 fps) can be attained. Even without the Power Drive Booster E1, the Canon EOS-1N'S shooting speed has been improved to 3 fps from the EOS-1s 2.5 fps. Besides, as most often, operating noise level has been a drawback for cameras with built-in motor drives. The improvement on quieter film rewind was also indirectly satisfying requests by many professionals who may have faced such issues in arenas (like sports, stage or even wildlife photography) where at times, may require absolute silent, .In response to these, Canon redesigned the film transport system and thus, film rewind noise has been dramatically reduced in the Canon EOS-1N.

A silent film transport system has been a basic feature of EOS cameras ever since the second wave of Canon EOS models such as the hugely successful Canon EOS 100/ Elan which was introduced back in October 1991. As followed by the eye-controlled AF Canon EOS 5/A2/A2E or the Canon EOS 55/50E/Elan IIE, the EOS-1N's film rewind unit was incorporated with a floating support which insulates it against vibration noise. Gear noise is also limited by the pulse-width modulation of the motor. These measures have successfully reduced film rewind noise to one-eighth that of the previous EOS-1. Similarly, when used with system accessories such as Power Drive Booster E1, film rewind noise is only one-eleventh that of the EOS-1 combination. In fact, it is so quiet that it is barely audible in a normal outdoor environment. In additional to that, one can also make use of the Custom Function (1) to further control the rewind mode, i.e. set either high-speed or silent (low-speed) film rewind.

Loading film Sequence (Please refer to Basic Info Section on this Topic) OR a separate page just on the operating sequence

Loading Film Step One Loading Film Step Two Loading Film Step Three
1: While pressing the back cover lock release button, slide down the latch and open the camera back. 2: Align the film leader with the orange mark and be sure that the film perforation engages the sprocket. 3: When the film has been loaded properly, the LCD displays the film cartridge symbol and a frame count of "I." If the film has not been loaded properly, the segmented line will blink.

Note:- if the film is loaded incorrectly, the segmented line on the LCD will blink and the shutter release will be disabled. Load the film again.

Drive Mode normal Drive Mode Low spped Drive Mode High Speed
EOS- 1N's continuous shooting mode (approx. 3 fps) 2: EOS- 1N with Power Drive Booster low speed continuous shooting mode (max., 3 fps). 3: EOS-1N with Power Drive Booster high speed continuous shooting mode (max. 6 fps).

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Film winding modes:- Press the film-winding mode selector behind the palm door and turn the Main Dial. The ECS-1N, with or without Battery Pack BP-E1, has two film advance modes: single and continuous. Attaching the Power Drive Booster E1 provides an additional mode: high-speed continuous. Select as follows: 1. Open the palm door; press Drive button. On release, the LCD displays the current mode for 6 sec. 2. While the Film Winding mode is shown, turn the Main Dial to select a mode. 3. The selection is set when the shutter button is pressed halfway or the mode display turns off.

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Rewinding film Built-in motor rewinds film automatically. Mid film roll film rewind enabled by a button on the rear of camera.

The built-in motor rewinds the film automatically at the end of the roll. Here's how the film rewind operation proceeds: 1. During film rewind, the segmented line on the LCD flows right to left into the film cartridge symbol and the frame counter counts down to 0. 2. After the film is rewound, the rewind operation stops automatically and the film cartridge symbol on the LCID blinks to indicate that film rewind has been completed. Open the back-, remove the film. To rewind the film in mid roll, press the film rewind button. The film rewind operation can be modified with Custom Functions CF-1 and CF-2. To rewind the film in mid roll, press the film rewind button on the rear of the camera. Operation:- 1: At the end of the roll, the film rewinds. As the film is rewound, the segmented line on the LCD flows from right to left into the film cartridge symbol. At the same time, the frame counter counts down to 0. 2: After the film is rewound, the film cartridge symbol on the LCD blinks. After confirming that the symbol is blinking, open the camera back and remove the film cartridge.

The soldier, Irag War
Mailto doghousephoto@earthlink.net

Credit: Image courtesy of CPT William E Thompson® who returned from Iraq after a 7-month deployment in support of Operation Iraqi Freedom. Thompson took many war pictures during his deployments not only to Iraq in 2003 but also Kosovo in 2000 and pictures of respective assignments was archived at Photojournalismstock.com. Thompson also Image copyright © 1996-2005. All rights reserved. Please respect the visual property of the contributing photographer.

(1) As stated earlier, basic configuration of EOS-1N's film transport system in areas such as automatic loading, DX-coded recognition and Auto Film Rewind is similar to that of the EOS-1 in that it operates as a two-motor system when the EOS-1N is used alone or with the AA-size battery pack BP-E1, and automatically converts to a three-motor system when the Power Drive Booster E1 is attached. Power is supplied to the camera according to the configuration, as follows:

a)   Body alone: One 2CR5 lithium battery, housed in the camera grip
b)   Body + AA-size BP-E1: One 2CR5 lithium battery housed in the BP-E1 grip, or the battery magazine housed in the base of the BP-E1 (four AA-size alkaline-manganese or AA-size Ni-Cd batteries)
(c)   Body + PDB-E1: Battery magazine housed in the base of the PDB-E1 (Eight AA-size alkaline-manganese, AA-size Ni-Cd, or AA-size lithium batteries, or the Ni-Cd Pack E1)

The use of
AA-size
lithium
batteries
:-
  Not possible with the AA-size battery pack BP-E1;
  PDB-E1: Possible only with the EOS-1N combined with a PDB-E1 imprinted with the AE lock asterisk (*) symbol.
  Not possible with PDB-E1 model that are not imprinted with the AE lock asterisk (*) symbol.
  Not possible in any case with the EOS-1
  Flash Possible with the Speedlite 540EZ.
.
| Previous | NEXT | Silent Film Rewinding, Film Winding Speed and Shooting Capacity and Film Stop Position Control

Focusing :- Part I | Part Two

Relative:- Film Loading /Rewinding Process of Canon EOS-1N

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Background and Various Issues | The Basic Features & various Setup
Manual & Auto Focusing | Metering Systems | Exposure Control | Viewfinder Optical
System
Flash Photography (with Speedlite 540EZ extension & Selective info on Canon TTL Flash Models:-160E | 200E | 300EZ | 300TL | 420EZ | 430 EZ | 480EG | Macrolite | Other non-TTL Canon flash model

Reliability Issues:- Body Chassis | Shutter Unit | Electronic Circuitry | Film Transport & film handling Secondary Functions:- Custom Function Part One | Part Two | System Accessories:- Film Back Options - instruction for Command Back E1 | Macro/Close Up Part one | Part two and Part III Flash for Macro-Photography | Power Sources -BP-E1 | PDB-E1 | Focusing Screens | Remote Control with Wireless Remote Set LC-3 | System compatibility

Variants of Canon EOS-1N:- Canon EOS-1N RS | Canon/Kodak Digital DCS-1, 3 -5 & 520/560 Series | Full Technical Specification | Main Reference Map / Nomenclature | Resource Centre:- Comparative Charts between EOS-1 & EOS-1N / or with its active Competition(s) (Nikon); Quick Operational Reference Card (278k Gif File); Listings of 7-segment digital numbers/letters appeared on LCD display panel/viewfinders (HTML page); External Link:-Instruction Manual (3.3MB PDF file applicable for both Canon EOS-1N (RS). | Using EOS system for your photography | Bots & Nuts of EOS System - by Philip Chong |

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Volunteered Maintainer(s) for the Canon EOS-1N Series Message Board: Philip Chong, Editor, Digital Camera Magazine; Vincent Thian, Photo Editor, Malaysian Bureau, Associated Press "AP", CYleow, Ex-photo Editor of local daily, The Star; Gary Rowan Higgins, Australia and other nice folks on the web.

Special Credit:- :Mr. Richard Yeow & Mr. Simon Wong from camera division of Canon Malaysia Logo Marketing Malaysia, for their continual effort in supporting development of this EOS/EF website. Others: All the nice people on earth who have contributed their photos and pictures of personal works or product shots for the creation of this site. Certain content and images appeared in this site were either scanned from official marketing leaflets, brochures published by Nikon and/or contribution from surfers who claimed originality of their own work for public publishing in this website, where majority of the extracted information are used basing on educational merits. The creator of this site will not be responsible for any discrepancies that may arise from any possible dispute except rectifying them after verification from respective source. Neither Nikon or its associates has granted any permission(s) in using their public information nor has any interest in the creation of this site. "Canon", "EOS", "EF" "RT", "EOS-1n RS", "Booster ", "Macrolite", "fluorite", "Image Stabilizer" & other applicable technical/business terms are registered trade name(s) of Canon Inc., Japan. Site made with an Apple G5 IMac.