Topic: Lenses

Shift Lens

What Is A Shift Lens? A shift lens is similar to a tilt-shift lens, except that it lacks the tilt...

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STF

What Does STF Mean When Talking About Photographic Lenses? An STF, or Smooth Trans Focus lens is...

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Teleconverter

What Is A Teleconverter? A teleconverter is an optical accessory lens that is mounted between the...

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Tripod Collar

What Is A Tripod Collar? A tripod collar, sometimes also called a lens collar, is a lens accessory...

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