Ann Onymous asked:


I just bought a canon t1i kit with the 18-ȗ lens and i want to get a protective lens so that dust doesn’t touch/enter the lens. I heard that getting a multi-layer UV is good because it doesn’t distort the picture. But i’m lost when it comes to the type. What’s the difference between a 52, 58, or 72mm? How do i know if a lens will fit on my camera?

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