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Category Archives: Lenses and Optics

LensRentals Tears Down the Zeiss Batis 25mm f/2 Lens

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LensRentals hasn’t been able to get enough copies of the Zeiss Batis lenses to even fill our existing orders, much less enough for Aaron and I to test and play with them. But one of our customers was kind enough to drop a Zeiss Batis 25mm f/2 lens the other day. Nothing looked smashed, but […]

Mythbusting: Parfocal Photo Zooms

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About twice a week I get a call from a photo-videographer wanting to know which photo zoom lenses in a certain focal length are parfocal (stays in focus while changing focal lengths). It’s understandable why they would ask; a superb photo zoom is 1/10th the cost of a good video zoom. They get pretty mad […]

The Long-Awaited, Scary and Amazing Fuji Lens Teardown

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For, oh, about 2 years now, every time we do a lens teardown I get emails from Fuji shooters asking me to tear down one of their lenses. There are several reasons we haven’t. For one thing, we have far fewer copies of those lenses so there is less reason to work on them. Since […]

A Peek Inside the Leica Vario-Elmarit-SL 24-90mm f/2.8-4 ASPH

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We always get excited when a lens comes out with some new technology or major changes. This time, the new technology came from an unexpected source when Leica released the Vario-Elmarit-SL 24-90mm f/2.8-4 ASPH lens. I know most of you don’t think of Leica as technological groundbreakers and most of you probably barely noticed the release of […]