Diameter size of the lens

Started Dec 17, 2010 | Discussions thread
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newfounder Contributing Member • Posts: 517
Diameter size of the lens

I haven't found detailed article on how this matter and how much it matters except that bigger diameter lens can take in more light.

the 55-200 mm vr is only 52mm in diameter but it's a great lens.

16-85 mm has 67 mm diameter
18-200 mm has 72 mm diameter
28-300 mm has 77 mm diameter

So, in theory, if anything else could possibly kept the same but only make about lenses at same diameter at 67 or 72 or 77, how their image quality would change?

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