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Old 01-26-2013, 05:02 AM   #18
PLEzero
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Join Date: Sep 2006
Location: Pittsburgh,PA
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You shouldn't have to shoot at ISO 400 or f/11 to get sharp images on a sunny day. Generally speaking ISO 200, 1/400th, and anything between f/5.6 and f/8 should get you some very good results. Obviously those numbers will vary with each photo. Going to the extremes suggested above just to get an acceptable photo tells me there is some other problem. Your lens may need to be sent in to Canon for calibration. It may just be a simple AF issue. For train photos I've found selecting a single AF point where I want the proper focus to be set works best. Single shot mode also helps keep that fous point correct when the train enters the scene.
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