I’ve had some interest in going back and looking at the Sony/Zeiss 55mm f/1.8 Sonnar (from now on called the Zony 55) on the Sony a7R. I am happy to oblige. I’ve changed the test regime a tiny bit. Rather than use a variable neutral density filter to adjust the light levels at the sensor… [Read More]
Search Results for: a7R shutter shock
Testing the D800E with the ISO 12233 target
A couple of months ago, before I got started on the Sony a7R Odyssey, I was looking for a way to compare a photograph of the ISO 12233 target made with electronic flash to one made with a continuous light source. The idea was to use the electronic flash to find out what the target… [Read More]
On vibration control, part 3
I ended yesterday’s post with this: In order to pick the right mass, spring stiffness, and damping to minimize camera movement in response to shutter movement, we have to know something about the forcing function created by the shutter movement, and also about the range of shutter speeds that are important. Today I’m going to… [Read More]
Looking back – and forward
I’m starting to take stock of the last couple of months’ work that I’ve done on this blog. In October and November, two things hit me at about the same time. They were interrelated and complementary, so I pursued both. The first was the challenge of making sharper pictures for the firehouse series. That led… [Read More]
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