Just one word to the A7R performance - ingenious ... For sure one of the best cameras image quality wise for a LONG time.
Sony test shots A7r comparison with multiple cameras including medium format - http://www.imaging-resource.com/camera-reviews/sony/a7r/#IQC
@Aria Thanks. Yes, for video we need to see the footage to perceive the noise. The dpreview noise comparisons in low light can give a good idea about it also. Probably the D5300 will be as good as D5200 in low light... A7 and A7R seems to be pretty good at 3200 iso in the new youtube videos, and usable at 6400. 12800 iso from 5d3 is impressive, but it lacks 1080p 60p, wifi and articulated screen, more expensive also.
@apefos, I think the RAW sensor performance of the Nikon D800 is pretty impressive. That doesn't mean it will turn out the same in video performance. It's a totally different ball game when it comes to video. Even at it's lowest setting I believe that there's a lot of Noise Reduction still going on in the 5Dmk3 and it seems like that process is one of the best out there or maybe it's just the inherent nature of each individual sensor. The 5Dmk3 sensor seems to be a beast in terms of it's ability to perform very well as you increase ISO. Perhaps it just has a lower noise floor than other sensors. It could be sensor cooling of some kind.
What is interesting is that the lowly Nikon D5200 seems to have a much better low light performance than many of it's better cameras. Just based on videos i've seen comparing the D5200 and the 5Dmk3, it's amazing how close the D5200 comes to the low light performance of the 5Dmk3. By all rights it shouldn't be close.
From the early videos i've seen of the Sony A7 and A7r these cameras may be pretty good in low light as well. Perhaps Sony has done something right with these sensors recently that may differ just enough from their earlier versions of the same sensor in the D800. It's gonna be interesting to find out one day just what the reason is for the difference in low light performance. Is it just the sensor being inherently better or a combination of that and the processor doing better NR.
I would like to understand why the 5D Mark III low light iso has a lower rate than D800 in DXO, but the low light video fron 5D Mark III is less noise than D800. Any thoughts about?
I uploaded a full-resolution panorama stitched from 11 36mp jpegs taken with the Sony a7R
http://www.flickr.com/photos/fotosiamo/10603386124/
Because of Flickr does compress the image a bit, I uploaded the full-resolution to Google Drive also:
https://docs.google.com/file/d/0B5z9ggEcvy77SWdaNVc3cnVqWE0/edit?usp=drive_web
SLR lounge has full size samples. Although it looks like the adapter with the pellicle mirror has misfocusing issues since it was a pre-production unit:
http://www.slrlounge.com/tennessee-new-sony-a7-a7r-image-samples
With Zeiss 55mm f1.4 Otus lens, the focus peaking wasn’t so accurate. We used some of Sony’s own lenses and adapters. The focusing wasn’t perfectly nailed.
Sony algorithm seems to be putting more emphasis on the highlights. We’ve found that the system underexposes by a full stop.
Nailing that image with A7r is tougher because the sensor amplifies the slightest issue (such as camera shake) and any other problem by ten fold. We almost feel like anything we do with it requires a tripod.
http://www.thephoblographer.com/2013/10/30/finding-wrong-sony-a7-a7r-far/
Looks decent. Look forward to more challenging tests. Color looks good.
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