Problem with sharp focus : LUSENET : Canon FD : One Thread

I have a cannon AE-1,50mm f1.4,70-210mm,199A flash. My pictures do not come out as sharp as I would like even when using a tripod with cable release or the self-timer.Could anyone give me any ideas as to what might be the problem? I have been real carefull to make sure the lens is clean and in focus.

-- Mike Plante (, June 29, 1999



First, what shutter speed are you using? At slow shutter speeds the mirror movement can cause vibration, especially with a lightweight tripod. Try some shots at fairly high shutter speeds, at least 1/250 for the 50mm lens and 1/500 for the zoom with fast film.

If that does do it, you may have a problem with the len to film distance and the lens to focusing screen distance not being the same. One way to check this out is to use your tripod and shoot a picture of a ruler laid end on to the camera. Focus on the 6 inch mark. Do this with a fairly slow film and a higher shutter speed (gives you a large aperature and shallow depth of field). You may find that the center of the in focus point is NOT at 6 inches. If so, this may be able to be adjusted by a repair shop.

WRT focus, make sure you use the split image portion to make sure you are properly focused.

-- Terry Carraway (, June 29, 1999.

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