# Canon EOS 100 > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Canon_EOS_100 > Markdown URL: https://mediated.wiki/source/Canon_EOS_100.md > Source: https://en.wikipedia.org/wiki/Canon_EOS_100 > Source revision: 1339993037 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) 1991 35mm single-lens reflex camera This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (May 2010) (Learn how and when to remove this message) Canon EOS 100 Overview Type Single-lens reflex Released July 1991; 35 years ago (1991-07) Intro price ¥76,000 (body only) ¥118,000 (with EF 28-80mm f/3.5-5.6 USM) Lens Lens mount Canon EF Lens Interchangeable Sensor/medium Film format 135 film Film size 36 × 24 mm Film speed ISO 6 – 6400 Focusing Focus TTL Phase Detection Autofocus (1 zone) Exposure/metering Exposure Programmed, shutter priority, aperture priority, manual, depth-of-field AE. Metering: 6-zone evaluative, centre weighted, partial Shutter Frame rate 3 frame/s Shutter speed range 30s – 1/4000s Viewfinder Viewfinder Fixed eye-level pentaprism Viewfinder magnification 0.75× Frame coverage 90% General Battery 2CR5 Dimensions 154×105×69 mm (6.1×4.1×2.7 in) Weight 580 g (20 oz) (body only) Chronology Replaced Canon EOS 650 Replaced by Canon EOS 50 The **Canon EOS 100** is a [35 mm](/source/135_film) [autofocus](/source/Autofocus) [SLR](/source/Single-lens_reflex_camera) camera introduced by [Canon](/source/Canon_(company)) in 1991. It was marketed as the **EOS Elan** in North America. It was the second camera in the [EOS](/source/Canon_EOS) range to be targeted at advanced amateur photographers, replacing the [EOS 650](/source/Canon_EOS_650). Its headline features were near-silent film winding, input of EOS [barcode](/source/Barcode) programs, integral auto-zoom flash, twin input dials, an autofocus auxiliary light for low-contrast subjects, a maximum shutter speed of 1/4000s, and five fully automatic modes. ## Design EOS 100 viewfinder information The look and feel of the EOS 100 had much in common with the [T90](/source/Canon_T90) and EOS 650. It was based around a [polycarbonate](/source/Polycarbonate) body with metal [bayonet](/source/Bayonet_mount) [lens mount](/source/Lens_mount). The top left of the body had a *Command Dial* for choice of either *Creative* or *Image* zones and buttons to control the integral flash. The top right of the body had a multi-function *Main Dial*, buttons for autofocus and film advance control, the shutter release button and an [LCD](/source/LCD) panel. The back of the body had the *Quick Control Dial*, used for aperture control, and the *AE Lock Button*, used to lock exposure settings. Once the *Command Dial* had been set for a particular shooting style, all controls could be accessed with the [right hand](/source/Right-handedness), with the [viewfinder](/source/Viewfinder) feeding back information to the photographer. - Metal bayonet lens mount - *Command dial* - LCD - *Quick Control Dial* and *AE Lock Button* ## Power features As seen in this picture, there is oil on the shutter blades due to the foam bumper disintegrating. This will affect shutter speeds and will effectively render the camera useless. The EOS 100 came with a motorised belt drive for film winding and rewinding. Canon claimed this made it the quietest camera in the EOS range. The drive also enabled the camera to operate at three frames per second, faster than most of its competitors. Using the *Drive Button*, the photographer could choose whether to allow single or multiple photographs to be taken as the shutter release button was held. The drive could also be disabled to allow up to nine [multiple exposures](/source/Multiple_exposure) to be made. All powered functions in the EOS 100 came from a single 6 volt [lithium](/source/Lithium_battery) [2CR5](/source/2CR5). There was no option to adapt this to [AA](/source/AA_battery) size batteries. ## Focusing The EOS 100 had a single BASIS (BAse Stored Image Sensor) chip, targeting the centre of the viewfinder. This was key to its two [autofocussing](/source/Autofocus) (AF) modes: *One-shot AF* and *AI Servo AF*. *One-shot AF* was used for stationary objects. Once in focus, exposure was calculated then the shutter was released. In low light or low contrast situations, the AF auxiliary light would momentarily project a series of red bands on the subject. This then enabled the AF circuits to have a subject with [contrast](/source/Contrast_(vision)) they could focus onto. *[AI](/source/Artificial_intelligence) Servo AF* was used for moving objects. The lens would continuously refocus on the object in the centre of the viewfinder whilst the shutter release button was pressed half-way. Once the shutter release button was fully pressed, the exposure was calculated then the shutter released. [Depth of field](/source/Depth_of_field#Effect_of_lens_aperture) preview could be enabled via a [custom function](#Custom_functions). If enabled, the aperture would reduce to show the depth of field every time the *AE Lock Button* was pressed. - View presented to the photographer - Auxiliary light – bands of red light shone onto subject to give contrast for autofocus circuits to operate ## Exposure control Light metering consisted of full-aperture through-the-lens metering, using a six zone silicon photocell. Automatic exposure settings were calculated using three [metering modes](/source/Metering_mode): partial metering (central 6.5% of the picture), centre-weighted average metering and evaluative metering. The current metering mode was displayed on the LCD panel. The *Command Dial* gave the photographer the choice of several shooting modes. The operation, and even the symbology used, would eventually be incorporated into Canon's digital camera range. Canon's fully automatic Programmed Image Control modes were *Full Auto*, *Portrait*, *Landscape*, *Close-up* and *Sports*. Symbol Description Full Auto Portrait Landscape Close-up Sports The manually adjustable shooting modes were *Shutter-priority*, *Aperture-priority* and *Depth-of-field*. In these modes, the exposure could be compensated by ±2 stops in 1/2-stop increments. Also, *AEB* (auto exposure [bracketing](/source/Bracketing)) could be used to take three continuous exposures in sequence, again by ±2 stops in 1/2-stop increments. All exposure control settings would be ignored when the *Command Dial* was set to manual. Then, both shutter speed and aperture could be set independently. The viewfinder would still give information on whether the camera thought the shot would be under- or over-exposed, but it wouldn't interfere. ## Flash Red-eye reduction was achieved via a bright light, not a series of pre-flashes The EOS 100 had an integrated retractable [TTL](/source/Through-the-lens_metering) flash. Information via the EF lens mount was used to optimise the zoom setting of the flash. It had three zooms to cover the focal lengths of 28 mm, 50 mm and 80 mm. Consequently, its [guide number](/source/Guide_number) for ISO 100 varied between 12 m at 28 mm, to 18 m at 80 mm. The focal plane shutter gave an [X-sync](/source/X-sync) speed of 1/125 second. The flash would normally fire when the first curtain had finished its travel, but this could be changed to the second curtain via a custom function. Red-eye reduction was achieved by producing a piercing continuous bright light to the left of the flash. This would shine while the flash capacitors were charged. The flash shoe contained signals for X-sync, red-eye reduction and second curtain sync. ## Accessories Circular infrared connection point for Canon's Barcode Reader RC-1 infrared remote control unit The only accessory specific to the EOS 100 made by Canon was the **GR-70** grip extension. However, unlike other grip extensions, this provides neither further power solutions (e.g. via AA batteries), nor extra shutter release buttons (e.g. for shooting in vertical, portrait orientation). The EOS 100 had a feature it shared with just one other camera (the [EOS 10](https://en.wikipedia.org/w/index.php?title=Canon_EOS_10&action=edit&redlink=1)) in the EOS range; the [barcode](/source/Barcode) reader. With the *Command Dial* turned to the barcode setting, the camera would accept programming details from Canon's **Barcode Reader**. Canon published a book of approximately 100 photographs showing different styles of pictures (landscapes, night-time shots, fast moving action, etc.). Below each was a barcode which could be scanned by the reader. This reader was then placed against the camera's infrared connection point and the settings were transferred. The back could not be exchanged, e.g. for date/time stamping. For this functionality, Canon released the **EOS 100QD**, where *QD* stood for Quartz Date. Contrary to Canon's own publications, this was marketed worldwide, not just in Japan. Despite not having many specific accessories, the EOS 100 was built to accept all of Canon's EOS range of accessories: - all [EF lenses](/source/EF_lens#List_of_EF_lenses) - Speedlite 430EZ flash (guide number 43 m) - Speedlite 300EZ flash (guide number 28 m) - ML-3 ring flash - RC-1 infrared remote control unit - [Dioptric](/source/Dioptric_correction) adjustment lenses for the viewfinder eye piece ## Custom functions The EOS 100 was among the first of Canon's cameras to have the facility to alter its operation via custom functions. These would remain set even if the camera was switched off or the battery replaced. Custom Function Description CF1 1=Stop film rewind at end of spool. Useful at quiet social events – film is rewound by pressing the film rewind button. CF2 1=Second shutter flash sync. Gives more natural speed blurring. CF3 1=Ignore DX film coding. Used if the photographer decides to up/down-rate a whole spool. CF4 1=Switch off AF auxiliary light. Used if the auxiliary light could distract the subject. CF5 1=Enable depth of field preview. Pressing the exposure lock button also sets the aperture so depth-of-field can be seen through the viewfinder. CF6 1=Turn all warning bleeps off. Makes the camera even quieter. CF7 1=Mirror up at start of countdown timer. Used to minimise all possibility of camera shake. ## Use today Sticky shutter problem highlighted The EOS 100 never enjoyed the popularity of the lower-pitched [EOS 1000](/source/Canon_EOS_1000) and it was discontinued in 1995. As of 2008, EOS 100 bodies can be bought from on-line auction sites from as little as £10/$15. Along with the T90, and other older Canon SLR film cameras, used EOS 100s can suffer from a 'sticky shutter' problem. This is caused by the camera's internal light sealing foam, which degrades over time and becomes stuck to the shutter, affecting exposures. This can affect the camera's resale value. The command dial is also prone to detachment from the electronic part of the dial, and many used EOS 100s are rendered unusable from this manufacturing flaw. ## References - Canon Inc (1991). "Canon EOS 100 Instructions, English Edition", PUB.C-IE-160G - Maskell, Tom (1992). [*Complete Canon User's Guide – EOS Elan.100*](https://archive.org/details/internationaluse0000mask). Hove Photo Books Ltd. [ISBN](/source/ISBN_(identifier)) [0-906447-98-4](https://en.wikipedia.org/wiki/Special:BookSources/0-906447-98-4). - ["EOS ELAN"](https://web.archive.org/web/20090303122754/http://www.canon.com/camera-museum/camera/film/data/1991-1995/1991_eos100_qd.html?lang=uscateg=crnpage=1991-1995&p=1). *Canon Camera Museum*. [Canon](/source/Canon_(company)). November 1993. Archived from [the original](http://www.canon.com/camera-museum/camera/film/data/1991-1995/1991_eos100_qd.html?lang=uscateg=crnpage=1991-1995&p=1) on 2009-03-03. Retrieved 2008-10-30. ## External links Media related to [Canon EOS 100](https://commons.wikimedia.org/wiki/Category:Canon_EOS_100) at Wikimedia Commons v t e Canon SLR cameras and lens mounts (film) R Canonflex (1959) Canonflex R2000 (1960) Canonflex RP (1961) Canonflex RM (1962) EX EX EE (1969) EX AUTO (1972) FL FX (1964) FP (1964) Pellix (1965) FT QL (1966) Pellix QL (1966) TL (1968) FD F Amateur FTb (1971) FTbn (1973) EF (1973) TLb (1974) TX (1975) Professional F-1(1971) F-1n (1976) New F-1 (1981) A AE-1 (1976) AT-1 (1977) A-1 (1978) AV-1 (1979) AE-1 Program (1981) AL-1 (1982) T T50 (1983) T70 (1984) T80 (1985) T90 (1986) T60 (1990) EF 1 EOS-1 (1989) EOS-1N (1994) EOS-1N RS (1995) EOS-1V (2000) EOS 650 (1987) EOS 620 (1987) EOS 750QD (1988) EOS 850QD (1988) EOS 630QD (1989) EOS RT (1989) EOS 700QD (1989) EOS 10sQD (1990) EOS 1000F (1990) EOS 100 (1991) EF-M (1991) EOS 5/5QD/A2/A2e (1992) EOS 1000FN (1992) EOS 500 (1993) EOS 5000 (1995) EOS 50 (1995) EOS 500N (1996) EOS-3 (1998) EOS 88 (1999) EOS 300 (1999) EOS 30 (2000) EOS 3000N (2002) EOS 300V (2002) EOS 3000V (2003) EOS 30V (2004) EOS 300X (2004) IX EOS IX EOS IX Lite See also: Canon EOS digital cameras v t e Canon EOS film SLR timeline Class 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 … 2018 Professional 1 1N 1V RT 1N RS High-end 10 5 3 Advanced 620 600 100 50 30 30V Midrange 650 1000F 1000F N 500 500N 300 300V 300X Entry-level 750 850 700 5000 3000 3000N 3000V IX IX 7 Pellicle mirror | APS-format | Eye controlled focus See also: Canon FD film cameras, Canon EOS digital cameras, Canon EOS mirrorless cameras --- Adapted from the Wikipedia article [Canon EOS 100](https://en.wikipedia.org/wiki/Canon_EOS_100) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Canon_EOS_100?action=history)). 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