Mastheadgraphiconline

introduced 1991 - discontinued 1996

Replaced conventional sprocket wheels with a belt-drive mechanism to reduce film transport noise to one-quarter that of other comparable cameras. The only other EOS (with the EOS 10) to use bar-code programs. Quartz Date version available.

Type and Major Components
Type: 35mm focal plane shutter SLR (single-lens reflex) camera with autofocus, auto exposure, built-in flash and built-in motor drive.
Lens Mount: Canon EF mount (electronic signal transfer system).
Usable Lenses: Canon EF lenses.
Viewfinder: Fixed eye-level pentaprism. Gives 90% vertical and horizontal coverage of actual picture area and 0.75x magnification with 50mm lens at infinity.
Dioptric Adjustment: Built-in eyepiece is adjusted to -1 diopter (eyepoint: 20mm).
Focusing Screen: Fixed, overall matte screen with AF frame and partial metering mark.
Shutter: Vertical-travel, focal plane shutter with all speeds electronically controlled.
Shutter Speed: 1/4000-30 sec. and bulb. X-sync is 1/125 sec. Set in 1/2 stop increments.

Autofocus
AF Control System: TTL-SIR (Secondary Image Registration) phase detection type using Cross-type BASIS (Base-Stored Image Sensor). Two autofocus modes available: One-shot AF and AI Servo AF. Manual focusing also possible.
AF Working Range: EV 0-18 at ISO 100.
AF Auxiliary Light: Automatically projected when necessary.

Exposure Control
Light Metering: TTL full-aperture metering using a 6-zone SPC (silicon photocell). Three metering modes available: evaluative metering, partial metering (covers approx. 6.5% of the central picture area) and centre-weighted average metering.
Metering Range: EV -1 to 20 (with 50mm f1.4 lens) at ISO 100 (normal temperature).
Shooting Modes:
• Program AE.
• Shutter-priority AE.
• Aperture-priority AE.
• Depth-of-field AE.
• Full Auto.
• Bar-code program mode.
• Programmed Image Control (Portrait, Landscape, Close-up, Sports).
• Flash AE (A-TTL or TTL program flash AE with built-in flash or dedicated Speedlite).
• Manual exposure.
Camera Shake Warning: Operates in Full Auto, Program AE, Aperture-priority AE, Depth-of-field AE, Programmed Image Control and bar-code program modes. Camera-shake indicator blinks in viewfinder when automatically-set shutter speed becomes 0 to 0.5 stops slower than ‘1/focal length of the lens in use’.
Multiple Exposures: Up to nine exposures can be preset. Automatically clears upon completion.
Exposure Compensation: +/- 2 stops in 1/2 stop increments.
Auto Exposure Bracketing: +/- 2 stops in 1/2 stop increments. Three continuous exposures are taken in sequence: one under, one at the standard metered value and one over.

Film Transport
Film Speed Setting: Automatically set according to DX code (ISO 25-5000) or set by user (ISO 6-6400).
Film Loading: Automatic. Film automatically advances to firs frame when back cover is closed.
Film Wind: Automatic using dedicated miniature motor. Two modes are available: single exposure and continuous exposure (3 fps maximum).
Film Rewind: Automatic rewind at end of roll.

Other
Self-Timer: Electronically controlled with a 10 second delay.
Remote Control: Possible using optional remote control unit.
Custom Function Control: Seven built-in custom functions selectable by user.

Power Source
Battery: One 6v lithium battery (2CR5).
Battery Check: Battery automatically checked when command dial moved to position other than ‘L’. Battery condition indicator displayed on LCD panel.

Dimensions
Size: 154.2 (W) x 105.0 (H) x 69.1 (D) mm (6 1/16” x 4 1/8” x 2 3/4”).
Weight: 575g (20.3 oz.) without battery, body only.

Built-in Flash
Type: Retractable type TTL automatic zoom flash housed in pentaprism. Series control system.
Guide Number (ISO 100, m/ft): 12/40 (28mm) to 17/60 (80mm).
Flash Coverage Angle: Automatically zooms to cover the field of view of 28mm, 50mm and 80mm focal lengths.
Recycling Time: Approx. 2 sec.
Firing Conditions: Fires automatically in low-light or backlit conditions in Full Auto, Programmed Image Control and some bar-code modes.
Flash Contacts: X-sync contact. Directly coupled contacts provided on accessory shoe. Red-eye reduction, 2nd curtain sync, flash output compensation.

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22 August 1991

Canon introduces EOS 100 – A Quiet Revolution in Camera Design

The new EOS 100 is set to revolutionize the way cameras are designed - making only one quarter of the noise of comparable cameras as the film is automatically advanced after each exposure.

Sports photographers will appreciate the benefits offered by the quiet EOS 100. No longer will the camera upset the concentration of players and affect the progress of a game or match. Wildlife photographers will find that they can take several photographs of a shy animal or bird, as the reduced noise of the camera will lessen the chances of frightening it after the first exposure.

The cause of the noise in conventional cameras is due to the motors and gear chains used to control film transport. To overcome this, Canon has introduced six different types of noise reduction techniques to make the EOS 100 quieter than any other EOS model:

Film transport is by a near silent belt-drive mechanism. This reduces vibration noise during film advance and eliminates the need for a noisy film rewind gear chain. Also, the belt teeth are rounded for smooth gear engagement and minimal backlash, providing improved transmission efficiency.

Rubber floating supports are used in three locations between the film transport mechanism and the body unit to reduce vibration noise.

Acrylic foam floating supports are used for soundproofing in three locations between the shutter/mirror charge motor and the front plate unit.

Coreless motors replace conventional motors for the dedicated film transport and for shutter/mirror charge. Rotation is smoother, with reduced vibration, resulting in reduced vibration noise from the drive system.

Worm gears are used for the output component of the shutter/mirror charge motor. This provides minimal vibration chattering between gears and a smooth transmission of drive power for a large reduction in operation noise.

In other cameras, sprockets engage with perforations along the edges of the film to determine the film advance distance – this produces a ratcheting sound. For the EOS 100, Canon have developed a noiseless optical detection system which measures the frame advance distance without coming into contact with the film.

Innovations and improvements in many other areas of control mean that the camera offers a wide range of features, yet is very easy to use.

Most of the camera functions are controlled by three simple dials. On the top left of the camera is the ‘Command’ dial. This sets the exposure modes and selects the setting modes for film speed, multiple exposure, auto-exposure bracketing and custom functions.

On the top right of the camera is the ‘Electronic Input’ dial. This is a multi-purpose control. Depending on the position of the Command dial, it sets the shutter speed, lens aperture, film speed, custom function and multiple exposure count.

On the back of the camera is the ‘Quick Control’ dial – similar to the control fitted to the EOS 1. In the manual exposure mode, this dial sets the lens aperture (with the shutter speed set by the Electronic Input dial). In any of the automatic exposure modes, the Quick Control dial can be used to set exposure compensation values.

The EOS 100 features an optional Bar-code program function. Each program pre-sets a range of different modes on the camera, including those for focusing, film transport, metering and the built-in flash.

However, the EOS 100 allows storage up to five different programs in the camera. This means that you can search through the handy bar-code picture book and use the bar-code reader to pre-enter one or more programs of your choice. With over 20 different picture book programs to chose from, the user can customize the camera to suit any type of photography.

The camera comes with four ‘PIC’ (Programmed Image Control) modes built-in – for portrait, close-up, landscape and sports photography. These settings are overridden if you want to add more than one Bar-code program to the memory, but can be restored to their default settings by inputting the ‘clear’ bar-code from the picture book.

In addition to the Bar-code program and PIC modes, there are seven other AE modes. These include shutter priority, aperture priority, depth-of-field, full auto, Intelligent Program AE, A-TTL flash and TTL flash metering.

The Intelligent program AE mode also features camera shake prevention. The built-in focusing sensor of the EOS 100 is able to detect camera movement. Where necessary, the camera then selects a suitable shutter speed, taking into account the focal length setting of the lens, to overcome the effect of this movement. A hand-held camera fitted with a telephoto lens will set a faster shutter speed – a camera on a tripod will set a slower shutter speed.

Also available is a metered manual mode, with shutter speed setting by Electronic Input Dial, and lens aperture setting by the Quick Control dial on the back of the camera.

The EOS 100 features a powerful built-in zoom flash (guide number from 13 to 18, ISO 100/metres – Zoom range correspondent to 28-80mm). The flash automatically zooms to suit the focal length of the lens fitted to the camera, and exposure is fully automatic. The recycling time is a fast 2 seconds.

To avoid ‘red-eye’ effects with pictures of people and animals, the subject can be illuminated by a built-in lamp for a couple of seconds before the flash fires. Creative flash photography is possible using ‘second-curtain’ synchronization, and flash compensation of +/-2 stops (in 0.5 stop increments) is available.

Automatic Exposure Bracketing (AEB) takes three pictures of the same scene in rapid succession, each with a slightly different exposure. It ensures at least one perfect picture in difficult lighting conditions. The exposure variation can be set between +0.5 and +/-2 stops to give underexposed, correctly exposed and overexposed frames.

Manual exposure compensation of up to +/-2 stops is also possible, using the Quick Control dial on the back of the camera.

For unusual and imaginative images, there is the multiple exposure function. This allows up to nine exposures to be made on one frame of film. The user is able to reproduce the same person twice in one picture, create ‘ghost’ images, superimpose the moon on a landscape, and create other eye-catching compositions. Multiple images of moving subjects can be very effective. Multiple exposures can also be made using the built-in flash.

With conventional autofocusing systems, the lens focus position is locked as the shutter release is pressed. This means that fast-moving subjects may have raced out-of-focus before the film is exposed. Canon’s ‘Predictive AF’ system, used in the EOS 100, eliminates this problem.

Using the unique Canon BASIS focusing sensor, the camera tracks the moving subject and assesses its speed and direction. It then predicts where the subject will be when the shutter opens, and focuses the lens on this distance. All this happens in a fraction of a second, ensuring pin-sharp pictures.

EOS 100 QD Model

The EOS 100 QD version features a date back, with a built-in programmed calendar offering four date and time formats. This information is imprinted in the bottom right corner of the film frame as the exposure is made. The imprint function can be switched off when not required.

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EOS 100

EOS 100

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