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Nikon DSLR Cameras
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Fx vs Dx Comparisons
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<blockquote data-quote="westmill" data-source="post: 52768" data-attributes="member: 9330"><p>Ouch ! sorry.... but you have that soooooo wrong. Virtualy all lenses perform at there best when closed down 2 to 3 stops.</p><p>Wide open performance has the narrowest DOF and usualy low sharpness especialy at the edges. F1.4 lenses genraly peak at around</p><p>F4 for maximum resolution where slower lenses like F4 will perform best around F8. Sharpness only starts to deteriate when difraction kicks in.</p><p>Diffraction doesnt genraly kick in until about F11 on your average lens.</p></blockquote><p></p>
[QUOTE="westmill, post: 52768, member: 9330"] Ouch ! sorry.... but you have that soooooo wrong. Virtualy all lenses perform at there best when closed down 2 to 3 stops. Wide open performance has the narrowest DOF and usualy low sharpness especialy at the edges. F1.4 lenses genraly peak at around F4 for maximum resolution where slower lenses like F4 will perform best around F8. Sharpness only starts to deteriate when difraction kicks in. Diffraction doesnt genraly kick in until about F11 on your average lens. [/QUOTE]
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