Some of you have noted that I haven’t posted in a while, and have asked about my health. I’m fine. Well, I’m fine physically, but I’m worried about what’s ahead, as I’m sure many of you are. I have been working on a video version of the Chronography lecture I was going to give at… [Read More]
No Sloof Lirpa announcement this year
The folks at Lirpa Labs, the research arm of Sloof Lirpa, inform me that they unfortunately will have no new product announcements this year. They, like so many of us, have been working from home for the past month, and productivity has not been up to its usual standard. Those of you unfamiliar with the… [Read More]
Another apology
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]
An apology
My whole website, including this blog, was out of service from about 10:00 PDT last night until 7:00 this morning. It was my fault. I wasn’t paying attention to the disk storage being used by backups and the site ran up against its disk storage limit. It didn’t fail gracefully; everything just came to a… [Read More]
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