Good news! Super 35mm mode on Sony A7S dramatically reduces rolling shutter
Techradar posted the full A7s review and writes:
Well, it’s an excellent camera, but still it’s one that has limited appeal. The average enthusiast is usually less concerned about low light performance and high sensitivity settings than pros who have to shoot in gloomy conditions. A professional wedding photographer, for example, might like it for its low light capability when shooting in churches and candle-lit receptions, but they are also likely to carry an A7 to enable them to take larger images (and therefore sell more expensive large prints) when shooting outdoors.
Why the Sony A7s Is Great for Street Photography (ThePhoBlographer).
A7s review at Pantip.
Sony A7s vs Sony A7R: ISO and Noise (Diglloyd).
Japanese A7s test at Ascii.
Sean: “Recently we are using Sony camera and we have lots of samples that working with SonyKorea. In particular lately I want to introduce a new project with ‘Sony a7s’. If your curious about the project click the link! http://www.youtube.com/playlist?list=PLwYxc5YY0Rqycnn_DSIfUKb5IC3wTYZ46.”
Sony A7s store links:
Sony A7s preorder in USA/CA at Amazon, Adorama, BHphoto, Sony USA, Sony Canada.
Sony A7s EU pages: Sony DE, UK, ES, FR, IT, NL, BE, AT, CH, SE, NO, FI, PL. And Wex UK.
0 Responses
First before First blood hairy ball. Caught napping again. 😉
I’ve heard mental conditions can be just as infectious as ordinary diseases.
Yay! Challenger to the reigning champion. It’s a take down.
Well – Good to know that the APS-C mode has less jello. So you can go APS-C through the day and full frame when you need more dynamic range and / or sensitivity ^^. Though: An A7000 with about the same features as the A7s (just APS-C) would be VERY nice. Or at least an VG40 with more manual control options.
An APS-C camera with the same pixel density as the A7S would have only 5.5MP and could only do HD video. That might be rather limiting for stills.
Of course, if what you mean is functional equivalent, then clearly a 12MP APS-C model could no doubt be designed, but it would be inferior in IQ to the A7S. In fact it would be rather similar to the Panasonic GH4 in performance terms. It would be just as prone to rolling shutter artifacts as the A7S as that’s primarily to do with how long it takes to read a video-frame worth of pixels. By cropping down, then it just means fewer have to be read and it can be done faster.
-In fact it would be rather similar to the Panasonic GH4 in performance terms-
But image quality wise it would be vastly superior.
An APS-C 12MP sensor would only be marginally better than the GH4. It would gain a bit of an advantage for video as the APS-C 3:2 aspect ratio is more suited to 16:9 video than is the M43 4:3 aspect ratio (which is why the GH4 has to be 16MP to allow for 4K 1:1 pixel mapping with a bit of a margin).
So, the APS-C camera would have the advantage, but it would be modest. Still image measurements have the GH4 fairly close to APS-C competitors, and it’s only the less suitable aspect ratio that would mean video would suffer more.
The “overall” image quality of an APS-C is in a different league to a M43.
The scores for individual parameters may seem marginally better, but combined together the “overall” image quality is in an unmistakably different league. Like the AustalianGreek above, I really think a truly mature APS -C camera is a great tool to serve 70% of my imaging needs in the most efficient way.
Simply speaking, M44 and APS-C are not in a different league. Given equivalent levels of
The objective measures of the GH4 and comparable modern APS-C sensors give similar results, which is precisely what you’d expect from the fundamental physical parameters. The GH4 has a sensor of 225 sq mm whilst a typical APS-C has an area about 50% larger. That means there’s about 1/3-1/2 stop difference. It’s a difference, but nothing like that between FF and APS-C. As it is, the GH4 seems to be performing slightly closer than the physical dimensions might indication, but not wildly so. Probably just a result of the small, incremental improvements in sensor technology.
As mentioned above, the difference on video will be higher than that as the 16:9 aspect ratio means the area of the sensor involved in capturing video will only be about half the amount (compared to APS-C) due to the better fit.
Comparing the D7000 to the GH4 (which gives vastly overstated ISO values according to measurements, too) there is still quite a difference (DR 1.2 ev better at base ISO for the D7000, for example), although the GH4 has the latest generation sensor and the D7000 is quite old. You get other benefits with m43 on the other hand as is discussed in various threads, but the latest generation APSC will always be better. It’s a matter of sufficiency and personal preferences as to what system you prefer.
I meant the 12MP “A7s alike” APS-C crop body (with 8MP crop mode for native 4K – If you want to shoot in 1:1 pixel mode or use it as a slight zoom). About the Jello – Sure. It´s important how much you want to read out (and how big the sensor is). But it would be nice to get a VG40 for example with unlimited recording time (or an A7000 with 30 min. limit – as always), native 8MPixel (or 12MPixel + crop mode) sensor and 4K capable internal recording with full sensor readout (and downscaling). Would be a great combo and sell like hot cakes ^^. And no one would miss full frame (especially with SpeedBooster and Co.).
APS-C is (in my opinion) still the best middle-way inbetween M4/3 and full frame (even with vintage glass – Which is quite often by far not perfect in the edges – Or let´s say by far not compareable with modern full frame glass, which on the other hand often costs a fortune ^^) – And if it´s possible to readout the APS-C crop mode of the A7s within time (and quite “ok” jello), it should be also possible with an APS-C model. Maybe something is coming within the next months – Who knows. At least I hope that there´s something coming ^^.
There seems to be something very strange about Techradar’s charts, especially those regarding DR and the GH4 versus the A7S and the D4S. They show the GH4 as being markedly better than the two full-frame cameras retaining 12EV of DR all the way up to ISO 25,600. That’s in complete contrast to what DxOmark found. Possibly it’s because Techradar have been using converted TIFF and JPEG which can mean they are reporting conversion tone curves, more than basic sensor capability. That also might be at the heart of the noise measurements, which aV.re also at complete odds with expectations.
Note, you have to be careful with the DxOmark comparison tool, as it seems to show the wrong Panasonic GH4 numbers. You have to go back to the test.
(DxOmark recorded about 7EV of DR on the GH4 at an indicated 25600, albeit the sensitivity is overstated by almost one whole stop. That’s comparable to good APS-C sensors, so must count as excellent, but nowhere near 12EV. At the same point the A7S is around 9EV).
If it would record 10bit 2k, it will be awesome!
I’d check out Digiloyd, but it asks for login details! Why do I have to login to view something posted on the web? Bizarre!
Because you havt pay to read it.
Phoblo: “As far as the system overall goes, it’s
ready for street photography. The Sony E-mount full frame offerings
already include a 25mm f2.8 and a 55mm f1.8. ”
A 25/2.8 with AF? Wow!
“The average enthusiast is usually less concerned about low light
performance and high sensitivity settings than pros who have to shoot in
gloomy conditions”
I think they underestimate the average enthusiast. I’m sure a lot of amateurs especially those into astronomy would love this camera for astrophotography, or landscape work at night. Pros aren’t the only ones who shoot in ‘gloomy conditions’.
It’s about the AVERAGE enthusiast. I doubt the average enthusiast is shooting the milky way. But better low-light performance benefits all shooters!
dude hold the camera still
Nice to see that there was sunshine in Seattle 🙂
There is indeed no visible rolling shutter problem in the crop mode, and the videos look ok to me, the part around the pike place market are very colored, specially to flowers look huge. On the other side, do we not buy that camera for the FF capture ability?