Canon T80 Three AC Lenses Digital Camera
November 30, 2008 | Canon, Digital Camera, Electronics | 1 CommentThe FD-mount Canon T80 can be considered as the first Canon autofocus SLR 35 mm. The AF system in the T80 uses a linear CCD array to detect TTL contrast image (Compared to previous Canon AL-1 with electronic rangefinder). The picture-taking mode can be selected with them on the external LCD screen. You can choose to be shot in One Shot AF, Servo or revert to use manual focus (AC each of the lens, there is a setting for you to alter any of this shooting preference.
For metering and exposure control, TTL multi-program AE and preset opening centerweighted AA with an average metering are provided. Lenses for automatic AC with the T80 were called lenses. These lenses are FD mount and capacity signal transmission. Three of these lenses are available: 50mm f/1.8 AC, AC 35-70mm f/3.5-4.5, and AC 75-200mm f/4.5 (as with the T80, the original FD-AF mount lenses may be few in numbers).
Three lenses Canon AC ie Canon 50mm f/1.8, Canon AC-Zoom 35-70mm f/3.5 ~ 4.5 and AC Canon 75-200mm f/4.5 zoom composed for the dedication lens group for Canon T80 auto focus function. Each target has been marked by a red circular ring in the front. Except for 75-200mm zoom, which continues to use conventional front lens cap (C-58mm), the other two have designed a new front lens cap (B-66mm). Each of these three lenses are slightly different.
The standard lens is simpler. The 35-70mm zoom has an limiters macro or manual focus for the zoom control, you need to use a lever to draw (up or down) to change the ratio zoom, like the 75-200mm zoom, the limiter was removed and replaced by a ring MACRO near the mountain and the zoom function is conventional pull and push mechanism. The three AC lenses were equipped with a 6-gold-plated electrical contact at the rear to mount FD Date of communication with the body section (aligned vertically in a series of six, the left inside the frame ).
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