Modern Classic SLR Series :
Canon EOS-1N Series AF SLR camera
Related Reliability Issues

File size: 63K HTML Loading...

Body Construction (Site construction in progress)

Camera Reliability The EOS-1N employs the same basic construction as the EOS-1 but offers improved overall reliability.

(1) Normal Operation Reliability
(a) Improvement in reliability of directly-coupled contacts
(b) Sequence-control self-diagnosis via main CPU

River Guide, Grand Canyon... Loading ......
U.S. based commercial photographer Charlie Borland was rafting the Grand Canyon when he took this portrait of the river guide using a Canon EOS-1N and 20mm lens. He later manipulated the image in Photoshop.

Contact Aspen Photo Workshop

U.S. based commercial photographer Charlie Borland, an active stock photographer and co-owner of stock agency  set up this conceptual image in his studio using a Canon EOS-1N and 50mm lens.

Credit: Image courtesy of Charlie Borland who owns and runs Selective of his older works can also be found at and represents by stock agency. Image copyright © 1996-2005. All rights reserved

(2) Ruggedness The EOS-1's outer cover is strengthened by treating the surface with chemical nickel plating and copper plating, over which a final layer of black chrome plating is applied, followed by a top coat of clear acrylic urethane. With the EOS-1N, however, following the chemical nickel plating and copper plating process, the surface is finished with a bottom coat of black polyester urethane and a top coat of clear acrylic urethane. This double-coated, double-baked finish improves the adhesive strength of the coating while maintaining the same ruggedness as the camera.

(3) Weather Resistance
(a) Improved sealing characteristics
(b) Counter measures against water penetration

(2) Chassis & Cover Construction When Canon EOS-1 has been officially revealed back in 1989, the use of non-metal for its basic chassis has raised many debatable discussion among users. This was the first time Canon has chosen an industrial grade substitute to replace conventional alloy metal for their flagship camera body chassis.

There is not many info revealing what and how the Canon EOS-1n was made of. As the EOS-1V, successor is reverting to metallic alloy for its chassis, the choice of materials for EOS-1N now is not important, But as far as I can gathered with the information is, the aperture section is based on an aluminum diecast frame inserted into a body made of glass fiber-reinforced polycarbonate resin which is combined with a zinc diecast front plate and encased in an outer cover made of ABS and polycarbonate resin. The layout of the principal mechanisms can be summarized in the illustration shown.

Main mechanism of Canon EOS-1N illustration

Main Mechanism Positioning & layout of the principal mechanisms in the Canon EOS-1N.

The camera covering is basically the same as the EOS-1, except that the "black chrome plating + top coat" finish used on the EOS-1's top cover and apron is replaced by a double-coated, double-baked finish (coating twice and baking twice) consisting of a undercoating coat of black polyester urethane coating and a top coat of clear acrylic urethane, resulting in increased adhesive strength of the coating and producing a deep, semi-gloss black finish (The existing color and finish of the EOS-1 is semi-glossy black using black-finish chrome plating and top coating.). The benefit is, such surface finishing also contributes to a fact in preventing slipping while holding the camera. Furthermore, the palm wing surface is provided with leather pattern molding and rubber coating for improved level of comfort when holding the camera. Also, all the buttons are provided with function indications, and recognition ease and operation ease have been further enhanced by respective function indications given to all the operating buttons and by employment of picture codes and use of brighter print colors.

(3) Weather-resistant characteristic The camera cover has been fully sealed against dirt and moisture, and the conventional external slides, switches have been eliminated, This improves overall reliability and prevents problems even under the most harsh photographic conditions. One of the other remarkable features which shields the camera from possible water penetration is the internal water wheel construction of the Main Dial, It scoops out any droplets. which may have penetrated from this possible entry point.

Emergency resque team at work in heavy down pour... Loading ......
Emergency rescue team at work in a heavy down pour. Water resistance feature of EOS-1N enable safe usage for coverage in News reporting photography such as this.

: Image courtesy of another good friend, Mr. Vincent Thian® Photo Editor of AP (Associated Press, regional bureau/Malaysia). Vincent also maintains an 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,

The focal plane shutter of the EOS-1N, is designed to offer lasting, reliable and durable performance, is consisted of water repellent lubricant coated blades, other than achieving a service-free 100.000 exposure cycles. All shutter speeds are electronically-controlled The first and second shutter curtains each have five shutter blades, Three of the shutter blades in both curtains ire made of carbon fibers and the other two are made of super duralumin (in the EOS-1, all were made of super duralurnin). By making the blades lighter and lowering the moment of inertia, the load on the drive mechanism has been reduced, hence, increased its durability.

The shutter speed range. from 30 to 1/8000 sec. is the same as the EOS-1's. Bulb and X-sync at 1/250 sec. are also provided, As the basic configuration has not much changes from EOS-1, and prior to its official debut back in 1994, many guess work was centered on whether the next upgrade of Canon top of the line camera will expand both ambient and flash shutter speed range to break new ground. Primarily, it was spearheaded by
Minolta's Dynax 9 incredible 1/12,000 sec. top shutter speed and Nikon F90X's FP 1/4,000 sec*. High sync speed capability (*with selective flash models only). No. Canon was falling back to adopt a conservative approach by opting for durability over performance in these areas instead. This is easy to explain by the fact Canon has seen the tremendous reception of users realizing benefits of the new EOS/EF concept and the next thing you should do is to preserve the footing and make sure they never failed in heavy duty field use by professionals. Anyway, for the speed-minded photographers, Canon also has successfully addressed by introducing the Canon EOS-1N RS which indirectly has neutralized this slight negative sector with its rapid shooting sequences of 10 fps. - when combines with the top shutter speed of 1/8000 sec. offers in the EOS-1N, I would think there is nothing much left not be able to capture with this combination (except for some rare instances one wants to use it for specific scientific applications etc.). Further, ultra-high shutter speeds usage also requires fast speed ultra-bright optic, and besides, you may also have to live with limitation of film types for image quality. Anyway, I think the decision made was viable, if not practical for what was going on in the market place during that era, sighting main competing rivalries have not found any viable solutions yet in answering to Canon aggression with the EOS/EF autofocus approach.

(2) Electrical Parts and Printed Circuit Boards The EOS-1N's electronic circuitry consists of a total of 13 flexible printed circuit boards and 5 hard printed circuit boards, centering around the main flexible PCB. The electrical component mounting diagram & actual printed circuit boards are shown in the illustrations,

| NEXT | Electronic Circuits and Power Sources

| Questions, Issues & Answers | Canon EOS-1 Series Message Board
| Canon EF lens Board | in a shared environment
| Free Trade Zone | shared environment

| Back | Index Page The Canon EOS-1N Series Professional SLR camera
| Back | Main Index Page The Canon EOS-1 Series Professional SLR camera

Background and Various Issues | The Basic Features & various Setup
Manual & Auto Focusing | Metering Systems | Exposure Control | Viewfinder Optical
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 |

The Eyes of EOS -
EF Lenses
A little OFF-TOPIC SOME Personal Thought

MIR Logo
HOME - Photography in Malaysia

Developer Link

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.