A7S Purple Glow at high ISO = Amp Glow?

Started Jul 2, 2014 | Discussions thread
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jdbastro
jdbastro Forum Member • Posts: 66
A7S Purple Glow at high ISO = Amp Glow?

Just got my new A7S yesterday.  Been tinkering with it.  Will use this camera for long duration astro-photos and astro-video with night vision equipment.

My A7S when set to higher ISO's shows some amount of purple glow mostly in the left upper and lower corners of the frame.

Is this purple glow phenomenon called:  amp glow?  Is this normal?

I also see it in video mode at higher ISO's.

A7S @ 1/10 sec, ISO=409600 Vivid

Thanks.

Sony Alpha 7S
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