Category The Glass in Front of Your Glass: All About Filters | Lensrentals Blog

Lenses and Optics

The Glass in Front of Your Glass: All About Filters

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In the ancient days of film, any photographer worth his flash bulbs had a large set of filters in his bag. Filters to correct light, enhance contrast, add special effects to his images, you name it, there was a filter for it. Then came Photoshop and RAW and filters became quaint. Many of them, anyway. […]

Lenses and Optics

The Seven Deadly Aberrations

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This article is aimed toward the gearheads among us, those who want to know more about how things work. Reading it will not improve your photography even a microscopic amount. Then again, it might, actually, at least a bit. But for those who are interested in such things it’s a fun read. And for many […]

Lenses and Optics

Everything but the Sharpness

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About 614 times a day I take a phone call or answer an email that is essentially the same question: “How sharp is this lens?” It’s no different in online forums (ok, actually forums are a lot worse) where pages of arguments drone on comparing the results of this bench-test lab review, these MTF charts, […]

Lenses and Optics

“This Lens Is Soft” and Other Facts

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In 2008, I wrote an article This Lens is Soft, and Other Myths that pointed out that lenses and cameras all have tolerance ranges and sometimes a given lens can be sharp on one camera body, and soft on another. At the time, autofocus micro-adjustment was a fairly new feature on camera bodies and my […]

Lenses and Optics

Fast Lenses: A Primer

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by Stephen Michael Garey What is a Fast Lens? A fast lens is any lens of any type and focal length that has an aperture design capable of opening to f/2.8 or wider. There are fast lenses currently available that open as wide as f/1.2, and there are any number of popular lenses that open […]

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