Do any Nikon FX cameras allow square-format shooting with DX lenses?

Question

When one uses a Nikon DX (APS-C) camera on an FX camera body, the camera automatically enters a "DX crop mode", using only the center portion of the sensor to match the DX format, as explained on Nikon's web site.

The FX format is roughly 36×24mm, while DX is 24×16mm, and it's this smaller size that DX crop mode uses. Notice that the short edge of the FX format is equal to the long edge of DX — and of course the image circle is perfectly round, not oblong. Do any Nikon full-frame cameras allow a "square DX" format, either 24×24mm (with some possible vignetting in the extreme corners) or slightly reduced?

Asked by mattdm

Answer

Square format is not supported, but 5:4 aspect ratio offered by D3, D3s, D800 and D800E is only slightly wider, 30mm. The nice thing is that the viewfinder is electronically masked, so you can compose with good precision. This aspect ratio is not provided on a D700 or D3x.

Alternatively, you could always crop in post.

Of course, you'll also need to disable Auto DX Crop.

Answered by Imre

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