jocau wrote in post #17486126
The noise is awful for being ISO250 on an A7S. What is causing this amount of noise? Maybe ETTR would have taken care of the noise?
MedicineMan4040 wrote in post #17486416
I dont know....I'm struggling with the A7s.
It was a long 26 second exposure...the noise is coming from that. I know it's a pain, but this is why I keep Long Exposure Noise Reduction switched on.
And this is a good study in why it's great to have both an a7R and a7S. For this shot, the exposure settings make the a7R a vastly better choice. But, if you wanted to take the same picture with a faster shutter speed and higher ISO, then that would favor the a7S.
How about this as a rule of thumb: if you want to use your tripod, then reach for the a7R. But, if you want to take a handheld shot in low-light, then reach for the a7S. And for handheld shooting in good light, take your pick: either are great. 