Lighting macros

Started Jul 24, 2010 | Discussions thread
OP Duncan C Veteran Member • Posts: 7,661
Re: What is the size of the hole in the diffuser?

Lynn David Cole wrote:


I plan to use this diffuser on my Canon 70-200mm f/4 IS (with extension tube) and need to know if it will fit before I order it.

The diameter of the proposed mounting location on the lens is 3 inches.

Do you think it will stretch to fit that diameter?

I have the Nikkor 70-200VR, which is nearly identical in size and shape. I measured it,, and get about 3 1/4 inches at the filter threads. I can't get the pop-up diffuser over the end of the lens. I don't think a 3 inch lens would fit either.

The opening in the diffuser is stretchy, but not THAT stretchy. You could probably cut the inside of the diffuser at the opening and glue in a thick piece of elastic to make it stretch wider. They are cheap, so it would be worth a try.

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Duncan C

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