There's another good review of the a7R on SLR Lounge: http://www.slrlounge.com/history-making-sony-a7-a7r-field-review
Noise is very low at ISO50, ISO100, ISO200, ISO400, ISO800 and even ISO1600 with very good levels of detail. The Sony Alpha 7 is a very appealing camera, offering a relatively low price, a full-frame 24 megapixel sensor, a compact body, full HD video with microphone, headphone and HDMI sockets. The camera delivers impressive image quality
http://www.ephotozine.com/article/sony-alpha-7-ilce-7-full-review-23179
The Sony A7R is the most revolutionary camera of 2013, bringing 35mm full-frame, interchangeable lens shooting to the masses both in terms of cost and size. Importantly the A7R is also well-built, a pleasure to use and delivers outstanding image quality.
Horrible photos of Sonus faber Guareri Evolution speakers (retail price - $22,000)
Please go to reviewer site, click one of affiliate links as he needs third pair in his daughter bedroom.
Thanks in advance.
It seems like sensor performance is quite steady now
On paper the A7 should offer faster auto-focusing and less noise at high ISOs than the A7R, but in reality there's not a big enough difference between the two cameras in either regard. Instead we'd choose the A7 instead of the A7R because it's significantly cheaper, it produces more manageable file sizes, has a higher flash sync speed, slightly faster burst shooting and a quieter shutter release. On the other hand, the A7R's incredible amount of detail due to the lack of an optical low-pass filter and 50% more megapixels is hard to ignore, the build quality is slightly better, and surprisingly it's the equal of the A7 in terms of noise.
Sample - http://img.photographyblog.com/reviews/sony_a7/sample_images/sony_a7_01.mts
The A7 is a huge step forward for LEICA shooters!
So while I’m not ready to jump on the “this camera is going to change everything” bandwagon just yet, it certainly has the potential to change some things.
http://www.lensrentals.com/blog/2013/12/sony-a7r-a-rising-tide-lifts-all-the-boats
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