A7r vs RX1: Purple noise on high iSO Locked

Started Mar 2, 2014 | Discussions thread
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Rhawi Dantas
Rhawi Dantas Contributing Member • Posts: 598
A7r vs RX1: Purple noise on high iSO

After using mainly the RX1 for a couple of days I went back to my A7r and found out that there is a weird purple-ish noise on the darker tones of images.
Both images were taken with their maximum allowed ISO setting in each camera (25600), same aperture and shutter speed and auto white balance. It seems that the A7r fared worse than the RX1.

Can anyone explain why this is?




ps. To those who might say "just use a lower ISO": I can't, I keep it auto and highest in both cameras due to my style of shooting.

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 Rhawi Dantas's gear list:Rhawi Dantas's gear list
Sony Alpha a7R II Sony a6300 Carl Zeiss Planar T* 2/50 ZM Voigtlander 21mm F4 Color Skopar Pancake II Sony E 16-50mm F3.5-5.6 PZ OSS +8 more
Sony Alpha a7R Sony RX1
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