A participant in the DPR Photographic Science and Technology forum challenged my — admittedly based on gut feel and experience — contention that, for critical focusing, it was more accurate to do it manually than with autofocus. I thought about it, and decided that I wanted to see some real data. I took a Sony… [Read More]
Archives for August 14, 2015
a7RII EFCS max shutter speed for native lenses
A few days ago, I determined that shutter speeds over 1/1000 second using electronic first curtain shutter (EFCS) on the Sony a7RII with a Zeiss 100mm f/2 Makro-Planar ZF lens showed some exposure unevenness, and shots over 1/2000 second showed a lot. Sony warns in the a7RII manual that exposures using EFCS made with non-native… [Read More]