This addition may help somewhat with the use of shorter Leica lenses. The sensor in the A7r also has micro lenses on it to compensate for the short throw of rangefinder lenses, particularly wide and super wide angle lenses. This is not such a big concern in medium to long focal lengths, but can become serious with wide angles. The reason for concern is that the Leica M camera firmware coupled with sensor design is configured to work with and correct the known aberrations in its own lenses, whereas the Sony A7r is not. The real question we all had is how well the Leica M lenses will perform on the A7r. At $2300 the A7r costs substantially less than a $6950 Leica M 240 camera body, and with 36.4MP sensor thrown in as an added bonus, it has the potential of serving as a second body to a Leica system, or of replacing the expensive Leica all together. You can adapt Leica M lenses, if you have them, using a Leica M to Sony E mount adapter. Around it are some of the lenses used for testing in this article, including a 21mm Elmarit, 90mm Elmarit, 28mm Summicron, 50mm Summilux, 135mm APO-Telyt-M, and two Voigtlander super wide lenses, the 12mm (shown above) and 15mm. The photo above shows a Sony A7r camera with 36.4MP sensor mounted with a Leitz 35mm Summilux lens. Nonetheless, the Sony A7r could not be expected to have the built-in firmware corrections for any aberrations these lenses might display. The A7r does have micro-prisms on its sensor intended to deal with those sensor areas where wide angle lens problems could be expected to occur. The big question was how the wide, and especially the super-wide angle lenses would perform. These generally adapt with little or no problems. There wasn’t much concern for the longer focal lengths. Of course the real question was how the Leica M lenses would perform on the A7r body. It sounded a bit like a Leica aficionado’s holy grail for a second camera body: a high resolution, full-frame body with a higher resolution than a Leica M, and costing only a third the price of the Leica M 240. This review on using Leica M lenses on the Sony A7r 36mp camera is by Tom Grill ( Web | Blog, click on images for larger view):Īs a Leica owner, I was immediately intrigued when I saw the first announcements of a full-frame, small, 36mp, mirrorless camera from Sony with the ability of accepting Leica M lenses.
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