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The a7S has the equivalent of two base ISO's: 100 and 2000.I actually never tried to go high in the ISO setting, but obviously something worth examining. I may have the wrong info here - I spoke with someone who works a lot with a7s. He told me that each camera has a native ISO sensitivity (the a7s has a really high value) and if I deviate too much it's like adding gain in the old cameras. We then checked the sensitivity for a7ii - and found it was ISO 100. Does is make sense? Maybe the website was way off...
Thanks Jim. Do you know what would be the base ISO for a7ii?The a7S has the equivalent of two base ISO's: 100 and 2000.I actually never tried to go high in the ISO setting, but obviously something worth examining. I may have the wrong info here - I spoke with someone who works a lot with a7s. He told me that each camera has a native ISO sensitivity (the a7s has a really high value) and if I deviate too much it's like adding gain in the old cameras. We then checked the sensitivity for a7ii - and found it was ISO 100. Does is make sense? Maybe the website was way off...
http://blog.kasson.com/?p=6172
Jim
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http://blog.kasson.com
I like the new Loxia 21/2.8 better than the WATE set at 21mm on the a7RII, where the sharper corners of the Zeiss lens and the reduced flare make a difference. On the a7S, the sharpness difference won't be as apparent.Leica 16-18-21/4 Tri-Elmar (WATE) - the best compromise of IQ, size, and weight. Very sharp with incredible Leica colors. downside is that it's expensive.
If I were to start from scratch, I'd probably get the Loxia 21/2.8 and wait for the new FE mount 10/12/15mm from Voigtlander. But honestly the WATE is the holy grail for me and no other UWA lens intrigues me at the moment.
blog.kasson.com
100.Thanks Jim. Do you know what would be the base ISO for a7ii?The a7S has the equivalent of two base ISO's: 100 and 2000.I actually never tried to go high in the ISO setting, but obviously something worth examining. I may have the wrong info here - I spoke with someone who works a lot with a7s. He told me that each camera has a native ISO sensitivity (the a7s has a really high value) and if I deviate too much it's like adding gain in the old cameras. We then checked the sensitivity for a7ii - and found it was ISO 100. Does is make sense? Maybe the website was way off...
http://blog.kasson.com/?p=6172
n.com
On the a7S? Sorry, just about all my video on that camera has been at ISO 100. I can tell you that there is a loss in noise floor and dynamic range with the a7S for stills whenever you're above ISO 100. However, since the camera has such good performance in that regard, you won't see the effects of that loss unless you push really hard in post. I doubt if people push video that hard. The internal a7S coder has only 8 bits of (nonlinear) precision, so that's a reason not to push to hard. What little video I've done with the camera, I've done with the Shogun, which has both a greater bit depth and less aggressive chroma subsampling.Thanks Jim, good to know. So I guess I can shoot video with ISO 200-3200 with no quality loss, right?
this is the cheap Canon, LTM 50mm 1.8this is CV or Canon lens?
What is your source for this? Is that for stills or video or both? I see claims all over the internet saying differently. I've seen your posts on here, and think you know what you're talking about if and when you post, so I'm just looking to put an end to this question in my mind. Philip Bloom claimed it was 320 in one of his videos, and I've seen that number around. I also see 1600, so I'm kind of hoping you have a source from Sony or can tell me how you know that.The a7S has the equivalent of two base ISO's: 100 and 2000.I actually never tried to go high in the ISO setting, but obviously something worth examining. I may have the wrong info here - I spoke with someone who works a lot with a7s. He told me that each camera has a native ISO sensitivity (the a7s has a really high value) and if I deviate too much it's like adding gain in the old cameras. We then checked the sensitivity for a7ii - and found it was ISO 100. Does is make sense? Maybe the website was way off...
http://blog.kasson.com/?p=6172
Jim