12-03-2019, 01:02 PM
(12-03-2019, 11:44 AM)toni-a Wrote: Noted same thing Canon vs Sony
EOS RP 26 MP files are substantially smaller than A6000 24MP files around 20% at least, knowing Sony used compressed RAW Canon uncompressed, if I go C-RAW Sony files are more than twice bigger, and we are talking about taking photographs in similar conditions since I often carry both.
I also noted ISO value difference between 7D2 and Sony A6000, usually ISO 100 on Sony is equivalent to ISO 125 on 7D2, even when shooting the grey card
could you also compare ISO sensitivities ?? with same settings for aperture, shutter speed and ISO, A6000 photos are slightly darker compared to 7D2, didn't compare yet vs RP
Canon does not offer uncompressed RAW. Canon compressed its RAW CR2 and CR3 files. Sony compression uses a stupid lossy compression with an error in its algorithms that causes artefacts, Canon uses lossless compression in CR2 and lossless and lossy compression in CR3.
There is no way to note a difference in ISO. Things are not that simple with ISO in digital.
A manufacturer can use 5 different ways to "determine" the ISO settings, with one often used one that uses JPEG output to determine the ISO (with the manufacturer free to apply any tonal curve it likes), So, there is NO standard "ISO 100" "exposure setting". And anyone like DXO "measuring" ISO accuracy are just doing nonsense.
Only with tools like RAWdigger you can really look at differences in "sensitivity" without applied tonal curves messing things up, and this does NOT determine which "ISO" is right when looking at different cameras.