Category Optical Quality Assurance | Lensrentals Blog

Equipment

Optical Quality Assurance

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  Pinhole images from new, but optically decentered lens. Olaf Optical Testing, 2016   After we published a number of posts about copy-to-copy variation, people were quick to say that this company or that needs to ‘just’ improve quality control. I totally agree but realize most people don’t have a clue what ‘improving quality control’ […]

History of Photography

A Clear History of Glass

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I’ve written about glass, as in lenses, for years now. But I’ve never looked into the history of glass as just a substance, because, well, who cared? When I accidentally did some reading about early glass, though, I was rather amazed at just how important it was. So I thought I’d write about the history […]

History of Photography

The Space Lens Mystery Screw

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We get to do some fun things through our testing company, Olaf Optical Testing. A lot of it I can’t talk about but sometimes we get a project that we can share. One of these came up recently when Matt Leeg asked us if we were interested in testing and cleaning an Angenieux 25mm f/0.95 […]

History of Photography

Cotton. Sidney Cotton.

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“He caused a lot of trouble over here, you know.”  A librarian at the Royal Aeronautical Society, when asked for references on Sydney Cotton. It’s been a while since I did a history article. I love writing about the true “characters” of photography, and to be honest, I hadn’t stumbled across anyone that really interested […]

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