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In all my recent comparison tests of camera, one thing has been reinforced and reaffirmed as far as I'm concerned. That whatever the merits of other cameras and whatever the A7r lacks, in terms of resolution and the rendering of fine detail it is an astonishing camera.
Yesterday I went out with my A7r and my recently acquired Nikon 28-200mm zoom. The zoom is manual focus only on the camera of course, but it was nice to be able to use a 'superzoom'.To make the best of it and to get the best results I could from the poor light, I used it on a tripod.
As you can see from the 100% enlargements the level of detail that can be captured and the sharpness is astonishing. And of course all this is achieved while producing a huge 36MP file.
This sensor produces the best image quality in terms of resolution of any Mirrorless / CSC / E.V.I.L camera and by quite some distance. There really isn't anything else to compete with it. And only the Nikon 810 DSLR, without including Medium Format cameras is on a par with it. The D810 uses the exact same sensor of course.
Now to some photographers resolution isn't everything, but for those to whom it is, the Sony A7r is still the camera to go to if you want / need the best image quality you can get in a a small light package. There may be issues about the Sony lens range and the A7r shutter may be incredibly noisy but the first is workable with 3rd. party lenses and adapters and for the noise you can always wear earplugs!!
Yesterday I was using it a slow measured way and using the tripod ensured sharp images and allowed me to use the lens at it's optimum apertures. And the images produced are capable of the most demanding publishing requirements and can be cropped severely and still retain exceptional image quality. And it's here that lack of an AA filter shows it's worth. Though these days AA filters are absent only for the same effect to be achieved with in-camera software, the A7r does let all that fine detail come through. The above were processed from raw files via Photoshop CS6 and there is little 'background' software softening going on, which is more than can be said for some other mirrorless cameras, i.e. Fuji X.
It's getting close to a year since the A7r arrived in the shops and the nature of the photographic internet means that things move on and the newest always grabs the headlines. But there has been nothing to beat this resolution since the camera was introduced. There are mutterings about Sony and Canon coming with some 50MP sensor cameras and it's going to be interesting to see what kind of quality can be achieved if they decide to put all those pixels onto a 35mm film size / full-frame sensor. But that is just speculation and I suspect is still in the R & D stage. In the meantime the A7r is here and I'm still enjoying the incredible level of detail from the files on my computer monitor.