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Canon EOS Ra Sensor Measurements at PhotonsToPhotos

Started Aug 13, 2020 | Discussions thread
OP bclaff Forum Pro • Posts: 13,922
Re: Canon EOS Ra Sensor Measurements at PhotonsToPhotos

sharkmelley wrote:

Very interesting.

I particularly note that the Ra appears to have lower read noise than the R:

https://photonstophotos.net/Charts/RN_e.htm#Canon%20EOS%20R_14,Canon%20EOS%20Ra_14

For both the R and the Ra, do you know of the reason for the ripples in the PTC at the low end? For some cameras it's caused by digital scaling of the raw data but this isn't something normally associated with Canon.

I'm showing averages across channels, which isn't normally an issue, except the Ra channels are very unbalanced. Very low red read noise is dragging the average down. If it were green I think it would be unchanged. And strangely blue EOS Ra is noisier than EOS R.

The EOS R also has ripples indicative of scaling.

There are some other oddities with the Ra histograms.

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Bill ( Your trusted source for independent sensor data at PhotonsToPhotos )

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