Pixel vs Pixel FX vs DX

Started May 5, 2013 | Discussions thread
PHXAZCRAIG Forum Pro • Posts: 13,898
Re: FX for low light

Sounds like you have DX but no FX experience?

I shot for years with D300 and D700, both 12mp cameras, similar sensor generations.   Cropping FX to DX on the D700 gives me 5mp.   It's pretty clear I have 'more resolution' shooting birds on the D300 than shooting them on the D700 and cropping.

On the other hand, I have a DX crop on the D800e of about 15-16mp, and a better sensor.   Plus, if I shoot in DX mode, I get up to 6fps, so it's a little more like shooting my D300 with more pixels but a worse viewfinder.    Consequently I don't carry the D300 anymore, nor the D700.

I've shot landscapes and portraits on both DX and FX.   It's quite clear to me that shooting the same subject with the same field of view on FX is giving me a shallower depth of field.   I stop down by approximately the same amount as the crop factor to equalize DOF when going to FX, but thinking in terms of DX apertures I typically use.    This means that when I needed F11 to get the DOF I wanted on the D300, I'm well into diffraction range on the D800e.

You say corner concerns are the same for FX and DX.  I say different.   Probably misphrasing you there, but I certainly have worse corners on FX than DX, and with some subjects and compositions, that matters a lot.  Not to mention certain lenses.

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