Two days ago, I posted data for the Sony a7R and a7II paired with the Sony 70-200mm f/4 OSS FE lens. I did tests on a tripod and handheld, and with and without image stabilization. Slicing and dicing the data another way, we can see when the a7R shutter shock degrades sharpness to a7II levels,… [Read More]

In the previous post, I reported on the performance of the Sony 70-200mm f/4 OSS FE lens on the a7R camera, with and without OSS turned on. In this post, I’d like to present similar results for the same lens on the a7II, with and without in-body image stabilization (IBIS), and with electronic first-curtain shutter… [Read More]

Rishi Sanyal, one of the reviewers on DPR, mentioned that he was seeing parasitic interaction of Sony a7R shutter shock and optically-stabilized (OSS, in Sony-speak) lenses that meant that users were often better off leaving OSS turned off. I thought I’d do some testing. I mounted a Sony 70-200mm f/4 OSS FE lens on an… [Read More]

When you first learned about photography, right along with the Sunny Sixteen rule, I’ll bet you learned this one: When shooting hand held, set the shutter speed to at least as fast as one over the focal length of the lens. That rule was originally promulgated for 35mm cameras. Should you scale the shutter speed… [Read More]

One of the things I’ve been doing while I’m sick and can’t get out much is making a few images of a teapot on the drain board in my kitchen.