Canon's manual A-series SLR — the AT-1, centre-weighted match-needle, electronic shutter, FD, 1977.
The Canon AT-1, introduced in 1977, was part of Canon's A-series of FD-mount SLRs built on the same body platform as the AE-1. Unlike the AE-1's automation, the AT-1 was a fully manual, match-needle camera, positioned as an affordable manual-exposure option within the popular A-series line.
As a 35mm SLR the AT-1 used the Canon FD breech-lock bayonet and an electronically controlled cloth focal-plane shutter running 2 seconds to 1/1000 plus bulb. It offered through-the-lens centre-weighted metering with a match-needle display and full manual exposure control. Because the shutter was electronically timed, the camera needed a battery both to meter and to fire.
The AT-1 suits students, beginners and users who want the A-series build and FD lens access but prefer full manual control over automation. Its match-needle metering makes learning exposure straightforward, and it shares the compact, comfortable A-series handling. It is a capable, simple general-purpose and learning camera.
When buying, note that as an electronically timed body the AT-1 will not fire with a dead battery, so confirm battery contacts and meter function. A-series bodies of this era are prone to a squeaking shutter or mirror (the 'Canon cough') from dried lubrication, so listen for noise. Check for perished foam light seals, prism haze and smooth advance and rewind. FD lenses adapt to mirrorless bodies for continued use.