A7r3 pixel shift compared to sdQuattro.

Started 11 months ago | Discussions thread
TN Args
TN Args Veteran Member • Posts: 6,884
Re: Additionally...

docmaas wrote:

Graham Gibson wrote:

Why not compare equivalent focal lengths? It seems odd to me to use the same physical focal length (35mm) and then crop the A7rIII result.

I shot the sony in aps-c. No cropping done.

Shooting a full-frame camera in APS-C 'image size' is cropping. Sometimes it gets called 'crop mode' or 'crop sensor mode'. It is exactly the same, in terms of image quality, as if you shot full frame then cropped out 55% of the area. Effectively crippling one camera in the comparison. Simply not fair.

A similar mistake would be to shoot an sdQH in APS-C mode, comparing with an sdQ, and declaring the sdQH to be a waste of money.

To compare different sized sensors, you need to use the full sensor area of both cameras, and fill each sensor edge to edge with the same scene. Lenses do become a factor, but best handled by shooting both lenses in their 'tack sharp' range and assess the images mostly near the centre.

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Sigma dp0 Quattro Panasonic Lumix DMC-GX7 Olympus E-M5 II Olympus M.Zuiko Digital ED 9-18mm F4.0-5.6 Panasonic Lumix G 14mm F2.5 ASPH +7 more
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