Humor and Sarcasm

About That 25-300mm f/2.8 You Wanted

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I get an email or text about once a month asking me if I think Canon, Nikon, or some other photo manufacturer will ever make something like a 24-300mm f/2.8 zoom lens. I’m usually gentle with those people, because I realize that a lot of people truly believe that if they want something badly enough, […]

Lenses and Optics

Quick Zeiss 85mm Otus MTF Charts

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Well, we finally got a few copies of Zeiss’ newest Big Ass Lens, the 85mm f/1.4 Otus in Friday afternoon. I didn’t have time to do a whole lot with them other than take a few shots, and run them through the optical bench for MTF testing, so this will be a short post. (Assuming […]

Lensrentals News and Alerts

Introducing LensRentals Keeper

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Saying goodbye can be the hardest part of any rental. With our new Keeper program, you can try it, then buy it! Just rent an eligible item, and then we’ll give you a starting purchase price based on the age of the copy we send you. We’ll even give you a credit for a portion […]

Lenses and Optics

Just the Lenses: Canon and Nikon Mount 85mm f/1.4 (and 1.2) Primes

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We’ll continue our Just the Lenses posts with the 85mm wide-aperture prime lenses. We’ll get through all of the wide aperture primes eventually, for those of you who like this series. If you haven’t read the previous posts, then you might want to go back and skim the introduction of the previous one to see the […]

Lenses and Optics

Field Curvature and Stopping Down

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Ignorance more frequently begets confidence than does knowledge. Charles Darwin What I know that I don’t know doesn’t cause me much trouble. I don’t know the formulas for 7th order optical aberrations for example. I don’t know enough math to calculate those formulas even if I did memorize them. But I’ve got shelves of books […]

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