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.
Lenses and Optics
We all know that aberrations affect points of light off-center, making them blurred. We all know that some aberrations are worse the farther away from center we go. And we know that some aberrations are improved when we reduce the aperture. Some of us even know the various rules-of-thumb for what makes an aberration […]
Equipment
This is a Geek Article, with very little practical information. But there are pretty pictures that non-Geeks might like. (Not the construction pictures, the ones further down.) First, I should explain why I haven’t posted much lately. Lensrentals was able to expand into some adjacent space, which was desperately needed. But the testing and repair […]
Equipment
I have a couple of things to talk about today. First, is to announce the winner of our name the new machine contest. Second is to answer about 1,000 people’s questions regarding optical testing and adjustment. The New Machine’s New Name First, if you don’t known what we are naming then you can find out […]
Equipment
First and foremost, if you aren’t at least a little Geeky, this post is not for you. Unless you’re one of those people who thinks ‘just take some pictures, dammit’ when I write some article about resolution testing. In that case, you might like this article because we’re taking pictures to test lenses. Sort of. […]
History of Photography
Nadar Rotating Portrait. Circa 1865, Bibliothèque Nationale de France “He is a man of wit without a shadow of rationality . . . His life has been, still is, and always will be incoherent.” Charles Philipon, describing Felix Tournachon. Photographers are the most fascinating people. I’m sure there are some that simply spent their life […]
