Drop-in haze filter? Or other drop-ins? Opinions, please.

[LovePhotography]

Okay, just bought a Canon EF 300mm f/2.8L IS II USM Image Stabilizer. Never had a camera with a drop in filter before. Half the reason (or more?) I bought filters before was to protect the lens. Is a good haze filter (or other filters) good for drop-in on this lens, or is it just more glass to distort the image and decrease transmission? Can you just do as well in post-processing in DxO? Or, do the benefits of drop-in filters outweigh the negatives? Opinions appreciated. Thx.

 

[Loswr]

No need for a 'haze' (UV) filter unless you're shooting film – dSLRs are insensitive to UV. If you use CPLs, you'll need Canon's drop in CPL. Else, just leave the empty gel filter holder in place (there's glass in it, it's part of the optical design).

 

[LovePhotography]

No need for a 'haze' (UV) filter unless you're shooting film – dSLRs are insensitive to UV. If you use CPLs, you'll need Canon's drop in CPL. Else, just leave the empty gel filter holder in place (there's glass in it, it's part of the optical design).

What's a CPL? (Sorry).

 

[Loswr]

Circular polarizing filter.