Originally posted by osv if we look at all the changes that were made with the a7rii, it's nothing short of revolutionary... not evolutionary, it's ground-breaking, they have the engineering expertise.
sony has been using the same lossy raw compression scheme on all their cameras, for years now... they probably asked their focus groups if lossy raw compression mattered, and just like in this thread, no one was able to come up with any real-world photos that showed a problem.
until the a7rii comes out, the a7r is currently the best mf camera on the market; it has, for instance, the highest level of evf magnification out of all the a7* series cameras... watch out for things like the lower shutter speed ranges that some people have shutter shock issues with, for longer lenses especially i sometimes use ~1/3xfocal length rule.
Coming from my Pentax background, i was initially uncomfortable about the lossy compression on RAW, not so much concerned anymore. Wish they would offer the option, like Nikon, though. Compression vs lossy compression.
Its going to be the A7rII for me. It presses all my buttons. With Sony offering 2 quiet options on the A7RII - Elect. first curtain and rolling shutter - perfect for the theatre shooting that i do.
Designing any product always involves compromises. Many folks don't ask the follow-up question - why did Sony go with such an aggressive compression idea. I don't know for sure - just a guess - but i suspect that when they designed the early e-models, they looked for ideas which would allow them to build smaller lighter cameras than their competitors. We might not like the compromises they chose, but one can't ignore the linkage to the small designs they were able to produce. At 500 gm, the FF A7 is 300 gms lighter than my APS 800 gm K3. Now, since then they've back-tracked and added more weight into critical areas to make the A7II 600 gm about. And one of the interesting things that happened, was some reviewers, like DPReview, criticized Sony for making their A7II heavier. Even at 600 gms, its still 200 gms lighter than my K3. Of course, the A7 series doesn't compare to any Pentax camera for their water resistance - ahhh....lifes full of compromises.
I agree with OSV - REVOLUTIONARY.