Quote:
Originally Posted by glend
Perhaps you picking up a reflection off a nearby structure that has been at such a low level it was not captured at lower ISO rates. That's a pretty aggressive ISO setting. Have you shot darks and bias offsets at that ISO and compared them?
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Thanks Glen,
No reflection as these pics were shot at five different targets from West, South and NE at varying elevations. ISO 3200 is not aggressive for an A7S and previous stacking has not required darks. I will try to eliminate these bands with Bias etc but that's not the issue that I have, it's that it's even there in the first place and I have not seen it manifested in any other pictures until I have stacked this many of them together. I am concerned that there is a hardware issue or that My A7 is faulty.
all the best
Paul
