Canon EOS R6 Mark II Sensor Measurements at PhotonsToPhotos

cocoanud wrote:

bclaff wrote:

cocoanud wrote:

Hi Bill,

Does the R6 apply Low ISO NR in ES as well ? It has the down triangles in the graph ?

Thanks,

—C

No it does not. I have reviewed the data and taken the down triangles away !

Thanks for confirming.

The interesting outcome of this is that if I were confident about my exposure and not looking forward to pushing shadows in post.. then might well use ES to capture a better RAW (not sure if there is a way to even quantify "better" RAW though)

That all depends on what raw levels are being filtered in the 14-bit mode.  If they are only the levels very close to black, the camera may be filtering things that wouldn't record well at all with 12-bit anyway, because of about two stops more post-gain read noise.

The difference, however, might be that with ES you can stack multiple exposures and have the fine color detail rise relative to noise, whereas the filtered 14-bit raw will have fine color detail scrubbed completely, in the RAW, and no stack of any size can bring it back.

It is very disturbing how manufacturers play unnecessary games with raw data that make it impossible to see what the sensor actually captured.

Once upon a time, the raws from my cameras all had full histograms without spikes or gaps, the same in all color channels, then at some point there were gaps in the histograms, in the same positions in all color channels, then they started doing math differently in different color channels, and cooking, and on and on until there really isn't anything really raw anymore, except that you get to do your conversions and get brightness, contrast, WB adjusted before committing to 8-bit JPEG.