joshloeser Posted June 1, 2009 Share Posted June 1, 2009 <p>I think you run into diffraction problems at that F-stop range, but I could be wrong, and it depends on the lens regardless. Photozone's reviews can help you identify the optimal apertures for the rather wide range of glass they have reviewed. The Nikon 17-55's optimal aperture is actually rather large, at about F4 to F5.6. So, it's not always a high number.</p> Link to comment Share on other sites More sharing options...
bkkstudios Posted June 2, 2009 Share Posted June 2, 2009 <p>That photozone site was a great suggestion. It made me think twice about the 85mm 1.4 I was about to buy. Basically it says it's not worth it, and the 1.8 is quite ok. Also, it pretty much says the widest f-stop is the worst, and in some lens' (not all) the smallest is as well. Thanks very much.</p> Link to comment Share on other sites More sharing options...
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