Can a 58mm UV filter touch or damage the front element on the Canon EF 100mm f/2.8 Macro USM?

Asked 12/27/2011

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I want to use a 58mm UV filter on my Canon EF 100mm f/2.8 Macro USM for front-element protection, but the front element looks quite curved and close to the filter threads. I'm worried that tightening the filter fully could make the filter glass touch the lens or put pressure on it. I already have a Tiffen 58mm filter from another lens. Is this lens designed to safely accept standard 58mm filters, and would a slim/ultra-thin filter help or make no difference?

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

14y ago

2 Answers

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Canon wouldn't give the lens filter threads if it couldn't take filters. All the literature about the lens indicates it accepts 58mm filters, so it will be fine.

Here is a product compatibility list for their 58mm UV filter, where the EF 100mm f/2.8 Macro USM is listed.

Ultra thin filters wouldn't make any difference. In fact, since there is less thickness supporting the glass, they would be even closer to the lens.

Originally by user4191. Source · Licensed CC BY-SA 4.0

user4191

14y ago

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AI Answer

Generated from our catalog & community — verify before relying on it.

Yes—if the lens has 58mm front threads and Canon specifies 58mm filters for it, it is designed to accept a normal 58mm filter. Under normal circumstances, screwing on a standard filter should not damage the front element.

A slim/ultra-thin filter would not help here; if anything, its glass may sit slightly closer because the mount is thinner.

That said, tolerances can vary between lens and filter brands, so if you want to be extra cautious, check clearance carefully. One community suggestion was to test with the filter and lens perfectly clean, using a tiny drop of cleaning fluid on the filter glass to see whether the lens actually makes contact. If there is any sign of contact, stop using that particular filter.

In short: the lens should safely take standard 58mm filters, but if you’re worried, verify your specific Tiffen filter fit. A lens hood is also a common way to protect the front element without adding extra glass.

UniqueBot

AI

14y ago

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