Hi Hans,
DPreview does a good job reviewing cameras, IMHO. They walk trough features and, most importantly, post raw images. DPreview is a very useful resource.
The shutter shock is a real issue with the A7r, but
more measurable than visible. It was a significant degradation of image quality to something like 24 MP level under some conditions. Those conditions were exactly the ones I shoot. Lack of EFCS was one of the main reasons I didn't buy the A7r. My immediate reaction was: "That's and old sensor with old technology I don't buy into it".
Folks shooting fast shutter speed, handheld, etc would not see double contours. Actually, I have never seen a sample from the A7r with double contours. Took some pixel peeping to observe it. But why buy a 36MP camera that produces 24MP images
under my shooting conditions?
Regarding the raw compression it is twofold. First part is a tonal compression, a bit like a gamma curve. Several knowledgeable persons analysed it and the principle is basically sound. It is quite probable that this compression is applied in the ADCs before the signal processing ASICs, so I guess that he ASICs are optimised for 12 bits. In that case I don't think Sony will change this with a firmware update.
The second part is the delta compression. That should normally be lossless except in the presence of large gradients, like the star tracks image, in which case it will cause artefacts. I guess that can be removed with a simple firmware upgrade.
The folks here are not testers, like DPReview or ImagingResource, who follow a strict protocol. They are photographers sharing their experience and opinion. They may certainly be biased, but we mostly are just that. Following a stringent protocol can suppress bias. That said, neither DPReview nor Imaging Resource reported on the shutter related vibration and they don't have that problem on their studio shots. Lloyd Chambers reported it first.
Michael and Kevin like shooting with the A7II and now they got the A7rII, they are happy as kids with new playthings under the christmas tree.
Best regards
Erik
Ps. A "real engineer" has measured A7r vibration during the shutter release process and has found that the vibration was mostly produced by the release and breaking of the first shutter curtain. The second curtain caused similar vibration, but that happens in a part after the exposure. What this has shown was that Sony needed to redesign the shutter and no solution with a firmware update was possible.
Reading the review on this camera is like on dpreview.com. I have a distinct feeling that the reviewers talk like salesmen from Sony. I still remember the very positive reviews coming out on the A7R and the issues with the shutter shock was strongly dismissed as not a problem here on LuLa. Now later on with the A7R II Sony is praised by the same people to have solved the shutter shock problem, huh? Sony never acknowledged there was a shutter shock problem so why is it that the shutter was totally redesigned and EFCS was introduced? Sony never tried to at least diminish the problem for A7R owners. I'm sorry to say this sucks. I'm not impressed by a company acting this way. I'm not saying that all other companies are totally different. It took Canon some hard beating to acknowledge the AF problems with the Canon 1D III and for Nikon to admit the oil problems on the D600. After these blunders both Canon and Nikon are quite quick to solve any problems. Their service organisations are excellent. How about Sony?
These reviews leaves me with a distinct feeling that there are issues that a balanced and critical review will reveal that is not revealed. Regarding the RAW format, do you really believe that Sony will solve this issue with the A7R II? What if this is not only in firmware but a part of how the hardware works? Then a firmware update cannot solve the issue. Trying to ridicule people who don't like this is not worthy of a reviewer. Making comments relative to Canon and Nikon without a hands on review of these cameras is not very professional in my opinion.
Having said that I do understand that grown up men become like boys having new toys for their reviews