After reading the latest blog and tests by Lloyd Chambers for the A7r I decided to check out for myself just how much vibration occurs with my camera. My test lens is a very sharp Leica 90 Apo f2 Summicron-M. This lens is capable of very sharp images - a real joy to use. Tripod is Gitzo 3 series with Arca Z1 head - sturdy stuff. Target f/stop was 1/50, 1/60, 1/250. Images shot both vertically and horizontally. I used a RRS small plate on the bottom of the camera since there really isn't a dedicated L-plate yet. I shot tree trunks at 50 feet, indoor images at 30 feet and 20 feet and still am amazed at the results. At 1/250 images remain sharp - really sharp! At 1/60 or 1/50 the images show movement and, to me, are unusable. There was also a difference between portrait and landscape with portrait being even more blurred. This is an incredible disappointment for me and makes the camera truly handicapped. There are many times when I would be using 1/50 - 1/80 shutter speeds. Common shutter speeds for me since I shoot at lower iso's. I compared this to the same images shot with my 800e with a Nikon 85mm 1.8. Same shutter speeds except that with the Nikon there is no visible image degradation. Of course mirror lock up was used and 2 second delay but that's it. I also used a 2 second delay with the A7r but with very different results. I could post images but what is the sense? You really have to experience this for yourself if you are at all concerned. As far as I am concerned the camera is completely crippled with longer lenses...... more than likely going back. A true shame.....
To add insult to injury I shot the same images with my Alpa/IQ180 and 150mm Digitar on my trusty Gitzo series 1 traveler tripod with Acra head. Light stuff that is nowhere near as sturdy as the Gitzo 3 and Arca Swiss. These images are crystal clear - tac sharp. I'm just really bummed out with this revelation. I really wanted all of this to work out. Again...... a true shame.
Victor
To add insult to injury I shot the same images with my Alpa/IQ180 and 150mm Digitar on my trusty Gitzo series 1 traveler tripod with Acra head. Light stuff that is nowhere near as sturdy as the Gitzo 3 and Arca Swiss. These images are crystal clear - tac sharp. I'm just really bummed out with this revelation. I really wanted all of this to work out. Again...... a true shame.
Victor
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