40mm UV filter impossible to find!

[justins7]

I am looking for a 40mm UV filter to protect my Canon 25mm lens, but it is impossible. The originals rarely come up on Ebay and even if you can find a regular 40mm filter (which is also rare), it will cause vignetting. So what do people do to protect this lens when in use?

Thanks,
Juz

 

[ferider]

I got both 40mm Skylight and ND8 B+W filter from Adorama. I had to wait a couple of months
though due to back-order ... Sometimes the originals come up on ebay.

This is for my Canon 50/1.5. Filters have regular thickness, on the 25 I would
make sure that they don't vignette first (they did on the 35/2).

Best,

Roland.

 

[rogue_designer]

a hood.

no UV filter - it only adds potential flare and reflections.

For my other lenses with 40mm threads I got a 40-40.5 step up ring - much easier to find. Maybe for the 25, you could go with a 40-52mm ring, which would double as a hood when not using filters, and should be wide enough to prevent vignette?

 

[justins7]

I have a 40mm --> series 6 step-up ring. Maybe that won't vignette.

 

[rbiemer]

Try here:
http://www.filterfind.net/clearspecials.htm
ANd you might also try:
http://www.ritzcam.com/
Rob

 

[laptoprob]

I have the wonderful Canon 25mm also but no UV filter. I do have a slim Walz yellow and orange and even they cause a little vignetting.
So usually I don't use any filter when working in colour.
A shade is not necessary because the lens itself is so far recessed.