R5 shadow lifting compared to R

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aftab
aftab Forum Pro • Posts: 10,383
R5 shadow lifting compared to R
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https://www.dpreview.com/forums/thread/4508829

In response to the above thread, Hoka Hey (Joe) very kindly provided RAW and DNG files from R5 and R.

Canon has claimed one stop low ISO DR improvement over the previous sensors, ie R and 5DIV. In practical usage it means one stop less noise in the shadows after exposing for highlight. What we try to do is to bring the shadows to midtone or thereabouts. With R and 5DIV I could easily do it if it involved 4 stops of shadow lifting. 5 stops could be done as well, but it involves more work in the post. If shadows needed more than 5 stops of lifting to bring to midtones banding could be seen.

Now the test.

The scene below is from R, size reduced.

After +5 exposure applied in ACR.

Here the painting probably needed 3 stops, top of the table is about right, front of the table will need at least 6 stops and the lower part of the table even more.

For the test +5 exposure applied R RAW file. Similarly, +5 exposure applied to the R5 DNG file. Sharpening and luminance NR turned off. R5 file needed 3 chroma NR and R needed 20.

Let us look at the 100% crops.

R

R5

Both cameras did well on the top of the table, but R5 has less noise. In the front part of the table, R shows some banding, R5 doesn't show any. In the lower part R5 appears to do better. Please note that R is f/10 and R5 f/9. I think ACR by default pushes shadows a bit on cameras they support, so R may look a little brighter in the shadows.

I looked at the top part of the scene as well to see how the cameras retain detail after exposure adjustment.

File sizes doubled in Photoshop to have a closer look.

R

R5

Very fine detail is captured on the painting and on the frame, especially by R5.

You can see the full sizes by clicking ''original size''.

 aftab's gear list:aftab's gear list
Canon G1 X II Panasonic FZ1000 Canon EOS 5D Canon EOS 5D Mark III Nikon D600 +25 more
Canon EOS R5
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