Quote Originally Posted by Colin500


Do you (or does anybody else) manage to successfully use the f/1.8 primes wide-open for non-staged shots of relatively fast-moving subjects like small children? I'm having great difficulty handling the thin DoF, heck, even for static subjects I still need to practice some...


Sure, but yes, practice helps, and not every shot will be a keeper. Focus on the nearer eye, and shoot in continuous mode. Here's an example, with a 100% crop shown (it looked better prior to uploading - eyelashes could be counted). Of course, this is outdoors so the shutter is fast enough to stop motion. Indoors with ambient light, I can still get reasonably fast shutter speeds with f/1.8, but motion blur becomes more of an issue and keeper rate goes down correspondingly.


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Rebel T1i,EF 85mm f/1.8USM, f/1.8, 1/500, ISO100