jgaster wrote:
naturephoto1 wrote
I know that I posted the first image in this pair earlier today. I am still trying to figure out how to limit the vibration of the A7r camera with long lenses in the vicinity of 200mm and longer particularly in the Portrait orientation. As more tests are run, I will try to post some results. But, both of these images were shot with my tripod mounted Leica R 280mm f4 Apo Telyt lens and my A7r. Images shot at ISO 800, I believe f4 for 1/160 second. and processed in LR5.6. The 2nd image is about a 100% crop. Look at the amazing sharpness in some of the lines in some of the thistle flower; this is what I focused on at 14.4X in Live View of the A7r.
Rich Rich
The general rule to avoid camera shake, “vibration,” regardless of equipment, is to have a minimum shutter speed equal, or, 20% longer, than your lens in millimeters. For example, if you are using a 200mm lens, your minimum shutter speed should be somewhere around 1/240. Using that basic rule of photography, I have never had a shutter issue I could trace to any particular camera.
Rich discussed a specific problem, and you responded with a "general" rule. How useful is that?