I received my A7R yesterday and have been learning the camera. There is one issue that I was wondering if others might have observed.
I am using a metabones adapter and I attached my Nikkor 200mm Macro lens.
I have the lens mounted to an arca cube that is pretty rock solid. I am using focus magnification. If i use the 2 sec timer and my shutter speed is 1/200sec or higher-- perfect…. If i am slow the shutter down-- e.g changing the iso or turning down the studio light--- lets saw 1/100- 1/20 sec--- I cannot get a shot without some level of motion blur. It can be subtle but it is definitely there. I have tried to stabilize the lens and tripod with my body etc while the shutter trips without much success. I am wondering if there is enough shake from the shutter that is unavoidable that is going to be problematic for this type of shooting?
As a control, I put my D800 on the lens and tried the same thing. At about 1/25 to 1/30 i could get about half the shots without any noticeable blur using mirror lock up and 2 second delay…