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The Sony A7S III uses a Z battery for its power and can be charged via USB-C for up to 600 photos or 95mins of video. There's still some noise even in the shadows there at ISO 800 after the push (relative to ISO 6400), so you are still paying a bit of a noise cost, and that's exactly what that test is designed to show. Lassoni makes a good point and another positive of the A7s is how much color information is held onto by the camera as the ISOs rise - dynamic range charts are only part of the battle when showcasing what a camera can do.
The real question is - why are they raising hardware amplification so much, b/c that in itself throws away dynamic range. This feature is not only useful for video but also provides a great platform for still photographers who may want to capture nightscapes and astrophotography. If you want more specific advice, then you'll need to either narrow down your interests to be more specific, or tell us which focal lengths you're most interested in shooting. Here I’m losing edge acuity due to noise reduction (and the low 12mp sensor count), but the results are still remarkably usable.I think Rishi has been waiting over a month for someone to explain why they'd conclude that ISO 400 is base. The 7S is a great camera, I used it during last new year's eve without a flash and the resulting photos are just amazing. The only thing to note however is that with this you do get rolling shutter (quite badly unfortunately) that happens when shooting under certain lighting conditions or at a screen.
Our testing and real-world shooting both appear to concur with DxO's conclusion that ISO 100 offers considerably greater DR than ISO 400. Frankly, I hear a lot of folk talking smack about that option, but when I look at what people are actually shooting, well, the drawbacks of using adapted lenses quickly have many of those same folk moving most of their shooting to native lenses. Had we shot a proper dynamic range test using ETTR methodology with the a7S at ISO 3200 and the a7R at ISO 100, the a7S would do even worse than it did in our shootout of the cameras at ISO 100. With respect to comments or other text-based content you submit or make available for inclusion, you grant us a nonexclusive, royalty-free, perpetual, irrevocable and fully sublicensable right to use, distribute, reproduce, modify, adapt, publicly perform, translate, create derivative works from and publicly display such content throughout the world in any medium. To have any effect on DR wouldn't it also have an equal effect on the SNR 18% measurement too and hence show up in the SNR graph?Won’t matter what shutter speed you’re using (in theory) it will be an issue if you shoot while jerking the camera around, or from a moving vehicle, or maybe even really fast object. By ISO 800, actually, you won't have many tones near/below the noise floor b/c every tone has been amplified 8x relative to base ISO. I did make it clear though that in their next implementation, it'd be nice if they offered lower levels of hardware ISO amp.
This week, the World Photography Organization announced the shortlist for Student and Youth Photographer of The Year, part of the broader Sony World Photography Awards of 2024. They've set new benchmarks for the sophistication of their video capabilities, but they're both potentially very capable stills cameras as well. Optimized video, optimized sensitivity, optimized speed, the Sony Alpha a7S III raises the bar for what a full-frame mirrorless camera is capable of. Most times I am shooting with two cameras and my other camera body is usually the Sony a7/a7 II, which are 24MP and used for my images where I want more detail/resolution. Funny reply but as someone who owns an A7s I fail to see why 10fps should not be possible from hardware that, in other Sony cameras with far greater pixels to record, manages up to 12fps.
Additionally, dual memory card slots both support working with CFexpress Type A or SD UHS-II memory cards for flexible and high-speed file storage.
Tones well above this floor, though, can be pushed 3, 4, 5, 6 or however many stops without showing much difference compared to a camera with a low (downstream) read noise floor. This is where the a7s really out performs all the other cameras I have, since it enables me to accurately focus on stars that I cannot see with my eyes in the sky with heavy light pollution.
DxO tested the A7s at every ISO and it never matched the A7R for DR at ISO 100, nor did it come close to the the Sony statement. If you apply NR to lower tones, you'd measure a deeper lower tone as having an acceptable SNR cutoff, thereby measuring a higher DR. Would love learning how to photograph the Milky Way and, if I ever got good enough to earn money for it, portraiture.
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