I'm Roger and I am the founder of Lensrentals.com. Hailed as one of the optic nerds here, I enjoy shooting collimated light through 30X microscope objectives in my spare time. When I do take real pictures I like using something different: a Medium format, or Pentax K1, or a Sony RX1R.
Geek Articles
A Birthday Teardown Let’s talk about the Pink Elephant in the room and get that out of the way. I ghosted you, I know. It wasn’t my plan, but sometimes shirt happens. Kind of a perfect storm of shirts, actually. There was Covid when everything came to a halt, and we wondered for most of […]
Geek Articles
We’ve been impressed with most of the lenses that have come out for the L mount cameras but haven’t taken many of them apart. But as luck would have it, we have several Panasonic Lumix Pro 70-200mm f/4 OIS lenses needing repairs for autofocus issues. In the U. S., Panasonic doesn’t offer repair really, just […]
Geek Articles
We are all recent-centric. We tend to think the technology we use didn’t exist until last year or so, even though the roots of it go way back. Phone apps are a great example. I have a dozen little apps on that phone that do things like calculate depth of field…
Geek Articles
There is a lot of online discussion about why a manufacturer made this lens when they so obviously needed to make that other lens. Or why this manufacturer’s design is better than that manufacturer’s magical solutions. So, I thought I’d share the second-hand information I have about the process because it’s probably better than the made-up speculation I read online.
Other
Many amateurs test their lenses by taking pictures of the nearest brick wall without logically thinking about what information that particular wall provides. Done properly, a brick wall test can provide a superb evaluation of your lens. But a poorly done brick wall test is really no better than taking cat pictures without first measuring whisker length and diameter. […]
