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<blockquote data-quote="jwstl" data-source="post: 134024" data-attributes="member: 12977">Thom hogan posted D600 lens recommendations on his blog yesterday and included was this interesting bit of info:I've been researching an article about sensor/lens interaction for awhile now, but am not ready to show my findings. However, I will share a preliminary conclusion: that the camera you mount the lens on does make a small difference to apparent lens performance. A really good case here is the old 20mm f/2.8D. I've long recommended that you avoid it on the DX cameras. Yet it seems to work better on recent FX bodies. That's actually one of the things that sent me into testing mode trying to figure out why as it's counter intuitive to supposedly established logic (e.g. DX cameras only use the best central area of an FX lens). Well, one &quot;why&quot; is probably this: from the front of the AA filter to the photo-to-electron conversion area in the sensor, you need to think of that as a second optical system. Light from the first optical system (lens) that hits the second optical system (filter/sensor) even remotely off axis will be &quot;handled differently&quot; by different cameras.</blockquote>

[QUOTE="jwstl, post: 134024, member: 12977"] Thom hogan posted D600 lens recommendations on his blog yesterday and included was this interesting bit of info: [COLOR=#000000][FONT=Verdana]I've been researching an article about sensor/lens interaction for awhile now, but am not ready to show my findings. However, I will share a preliminary conclusion: that the camera you mount the lens on [/FONT][/COLOR][I]does[/I][COLOR=#000000][FONT=Verdana] make a small difference to apparent lens performance. A really good case here is the old 20mm f/2.8D. I've long recommended that you avoid it on the DX cameras. Yet it seems to work better on recent FX bodies. That's actually one of the things that sent me into testing mode trying to figure out why as it's counter intuitive to supposedly established logic (e.g. DX cameras only use the best central area of an FX lens). Well, one "why" is probably this: from the front of the AA filter to the photo-to-electron conversion area in the sensor, you need to think of that as a second optical system. Light from the first optical system (lens) that hits the second optical system (filter/sensor) even remotely off axis will be "handled differently" by different cameras.[/FONT][/COLOR] [/QUOTE]

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