Visual comparisons of a7RIII, a7RIV shadow noise

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JimKasson Forum Pro • Posts: 26,282
Visual comparisons of a7RIII, a7RIV shadow noise

I've posted quantitative comparisons of the a7RIII and the a7RIV shadow noise performance here. I saw a small advantage for the a7RIV at a few ISO settings, and a small disadvantage at others. In no case did I find the differences at all striking.

Now I've done a visual test, taking the same serial numbered cameras I used for the quantitative test, and ensuring that the test conditions, including lighting, exposure, and camera temperature, were identical. I resampled the images to the same field of view, at a finer pitch than that of either camera so that neither would have an advantage.

Here are the images with Lightroom's default sharpening and noise reduction:

Here they are with both sharpening and noise reduction turned off:

I draw the same conclusions from these visuals as I did from the graphs I posted earlier: the a7RIV has only small advantage in shadow noise at a few ISO settings, a disadvantage at some, and the differences are not consequential to normal photography.

Overall, I find the a7RIV comes up short compared to its predecessor, but not short enough that that should discourage an a7RIII owner who wants the capabilities and features of the newer camera.


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