ISO 64,000!!!!
Big 7x8 Buck Poses Before Sunrise by
David Stephens, on Flickr
a7RIII, with FE 400mm f/2.8 GM OSS.
DxO's PRIME noise reduction gets major credit here. The RAW file was dog crap, with HUGE luminescence noise. I set luminescence noise reduction at 25 out of 100, so as not to crush the detail. I added Fine Contrast and raised overall Contrast. PRIME then does a pixel-by-pixel analysis and correction of the file. For internet, the result is darn good, IMO.