[Canon] AT-1 | December 1976
AT-1
The AE-1 with shutter speed-priority AE and TTL metering became wildly popular in Japan and overseas.
However, in a few overseas markets, the AE-1 had a high price tag. There were also many users who still preferred manual metering. In response to these people, the AT-1 was developed. It had the same body as the AE-1. It featured match-needle metering and TTL center-weighted averaging metering with a CdS photocell. The camera could use the same accessories as the AE-1.
- Type: 35mm focal-plane shutter SLR camera
- Picture Size: 24 x 36 mm
- Normal Lens: Canon FD 50mm f/1.8 SC
- Lens Mount: FD mount
- Shutter: Four-axis, horizontal-travel focal-plane shutter with cloth curtains. X, B, 2, 1, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000 sec. All speeds controlled electronically. Built-in self-timer (with blinking LED).
- Flash Sync: X-sync automatic-switching sync contacts with German socket and hot shoe.
- Viewfinder: Fixed eye-level pentaprism. 0.82x magnification, 93.5% vertical coverage, 96.3% horizontal coverage. Split-image rangefinder encircled by microprism rangefinder at center of fresnel matte screen. Metering match needle, overexposure warning (also battery check indicator), and underexposure warning provided.
- Exposure Control: CdS cell for TTL full-aperture, match-needle center-weighted averaging metering. Metering range at ISO 100 and f/1.8 lens: EV 3 – 17. Film speed range from ISO 25 to 3200.
- Power Source: One 4G-13 6 V mercury oxide battery or 4LR44 alkaline battery.
- Film Loading & Advance: Slotted take-up spool. Advances with camera-top lever’s 120° stroke (partial strokes enabled). Ready position at 30°.
- Frame Counter: Counts up. Resets automatically when camera back is opened.
- Film Rewind: Camera-top crank.
- Dimensions & Weight: 141 x 87 x 48 mm, 590 g.