“After Darkness, light” Testing the low light of the Sony A7S II from Philip Bloom Reviews & Tutorials on Vimeo.
Philip Bloom (Click here) posted his initial impressions of the Sony A7S II. Check it out!
More A7sII tests:
Sony A7SII Profile Test: https://vimeo.com/143344079
Sony A7s mark II vs the A7s Frontallobbings.
Sneak Peek: A Pro’s Take on the New Sony Alpha7S II (Vimeo).
The Sony a7S II – hands on and comparison to a7R II (Hireacamera).
Sony A7sII is now shipping in USA at Amazon, BHphoto, FocusCamera, Adorama. And in Europe/Asia at ParkCameras, WexUK, Jessops and Digitalrev.
20 Responses
a7sII ISO Test. The noise in Slog3 is higher as in SLog2:
https://www.youtube.com/watch?v=K1riN0-sWKA
Slog 3 is for highlight headroon slog 2 for shadow recovery. It is supposed to be this way.
,,Slog2 puts mid grey at 32%IRE and 90% white at 59%IRE
Slog3 puts mid grey at 41%IRE and 90% white at 61%IRE”
,,There is no difference in the highlight range of S-Log2 and S-log3. It is exactly the same with both curves”
found:
https://community.sony.com/t5/FS7/FS7-Scene-Files-and-SLog2-vs-SLog3/td-p/486446
The noise in the video Slog3 in mid grey tones is felt more then 9% difference. I think it needs closer test of this. I read an other commend that means the SNR Signal is the generally the same. But the example pictures to this are not shooting in the highest ISO, to better sight complain.
The Person you quote later in his post says that there are “slight distribution changes”. Well I guess that is rather an understatement. Judging a slog curve by 2 or 3 reference points might come in handy but does not tell the whole story. Several other sites describe the output to have “a good highlight rolloff” or “The extra lattitude Slog3 provides can be seen in the highlights”
See the attached image. I have not been able to find the curves however.
Thanks for the curves.
Is the statement the mid tone in Slog3 are +9% brighter correct?
Looking at the real word pics I see the middle skyscraper to be visibly brighter in slog3 and looking at the graphs around -2ev to 2ev there is a significant distance between both graphs. I have no raw data but 9% difference in the midtones sounds correct.
What is yer clarification for the more noise in the mid tones in Slog3- It’s it only based on the +9% brighter mid tones or has Sony an other (poorer) SNR Reduction in this mode?
I am really no expert in this field and cannot calculate which combination of brightness ie. height of the graph and contrast ie. angle of the graph yields the best SNR ratio. This does not even take into account the many types of noise. The video you posted should have a lot of photon shot noise. Increasing brightness on this kind of noise may exaggerate it’s visibility stronger than applying more contrast. Since even the brightest parts of the resulting video would have to be described as a low key histogram, contrast can even lower the visibility of noise as it crushes it into the blacks. All I want to say is that slog2 is not better than slog3 or vice versa. Both have their place and both help to have a workaround for Sony’s choice to keep video on only 4:2:2 output.
Thanks for your statement.
I find important to mention the Slog3 perhaps in high ISO generated more Noise in mid-tones, as if one raises a Slog2 video in the Mid tones up + 9%. It requires a deeper test to more exactly ascertain this phenomenon.
a7sII Black hole issue when shooting toward the sun:
https://www.youtube.com/watch?v=eo6SbDm9fc8
Really. Somebody is shooting straight at the Sun and they don’t expect issues?
With the a7s or a7sII?
I found not one same report about this in the internet. But the a7sii is new. It’s not available in Germany or probably in Europe. I find importantly to mention this, so that it is observed and is hopefully also announced whether it is an isolated case or a general problem.
Not if it doesn’t exist with other camera’s.
Wow, how strange.
Wonder what is happening…
It seems as single problem with this one camera.
Here in this video isn’t this phenomenon:
https://www.youtube.com/watch?v=8h0P0D8ae0Q
a7 serie new alternative N Log app:
Info and DL: http://nabilfathi.tumblr.com/post/131…
Video demonstration:
https://www.youtube.com/watch?v=BoJswbrEm7s
what is that ?
After what on the web page stands the app will be still extended. One can be of use SLog from ISO 100 and use DR values probably together with the Picture profiles. It is probably an app like the
PlayMemories Camera Apps
Another video from Philip”nothing-ever-in-focus-24-7-365″ Bloom. And he doesn’t disappoint. Lots of headache inducing almost-in-focus shots. Meh!! With the amazing high ISO performance of the α7s2 there is no reason to shoot wide-open anymore.
Oaxaca is spelled Oaxaca, but it is pronounced Wahaka, Please see 2:30 in the video for the street Mexican food stand named Wahaka, This is one of the few scenes in the video to have enough DOF to read the sign.