Sorry, folks. This seems to be my month for Internet screwups. Yesterday, I installed a new firewall at a different IP address than I had been using for this blog. But I didn’t install the SSL certificate on the firewall. So, after the DNS changes propagated, everybody started seeing scary warnings about the security of… [Read More]
Through-focus corner performance of the 20 mm f/1.8 Nikkor S
In the previous post, I put the 20 mm f/1.8 Nikkor S on a Z7, aimed it at an artificial star, and used the focus shift shooting (FSS) feature of the camera with a step size of 1 to move from front-focused to approximately in focus to back focused, and I composited them. In this… [Read More]
Nikon 20 mm f/1.8 through-focus behavior
As I said in the previous post, there are two pieces to bokeh. The first is what things look like when they are well out of focus (OOF), and the second is how the transition from OOF to in-focus happens. Yesterday’s post addressed the first; this one will deal with the second. I used a… [Read More]
Sony, Nikon 20mm f/1.8 OOF bokeh on a7RIV, Z7
There are two pieces to bokeh. The first is what things look like when they are well out of focus (OOF), and the second is how the transition from OOF to in-focus happens. The second is complicated, but the first is very simple. What you see when part of the image is well OOF is… [Read More]
Nikon, Sony 20/1.8 foliage test
This is a continuation of my testing of the two new 20 mm f/1.8 lenses from Sony and Nikon. These fit E-mount and Z-mount cameras respectively, and are part of a push by Nikon for a big place in the full frame mirrorless camera (MILC) market, and a defense by Sony of its historical dominance… [Read More]