Any good UV filters for Canon EOS R7 with Canon RF 100-500 f/4.5-7.1 L IS

[hollysal]

Are there any good UV filters for Canon EOS R7 with Canon RF 100-500 f/4.5-7.1 L IS?

I tried a cheap Tiffany UV filter and found that it affected my focus to the point of each pic being soft or completely out of focus.

I have heard expensive UV filter brands may have the same result.

Does anyone have experience with a good UV filter and focus on a Canon camera system similar to mine? 

Thanks

[Waddizzle]

The “best” UV filter to use is already built into the image sensor:

if you need a filter for protection, then use a high quality clear filter. 

[hollysal]

I would like to use a UV filter for protection especially since I live by the coast and sea salt spray is a consideration. 

I am hoping for a filter that will not affect my focus and provide protection. 

[deebatman316]

A clear filter works best for protection. I would avoid a UV filter as it could impact the AF system. Also your camera has one built in so it would be useless unless you were shooting with a film SLR.

[hollysal]

Any brand specifically for a clear filter that might work best? Thanks for all replies

[Waddizzle]

“ Any brand specifically for a clear filter that might work best? Thanks for all replies. “

  I use B+W Nano Clear. Canon also sells Clear Protecto filters. 

[shadowsports]

+1.  Most high quality filters have a rated light transmission percentage.  You'll need a 77 mm filter.