Infiniteeye,
It would nice if we knew what equipment you were using.
Judging by your lens I will guess a 20D or XT right?
If so you dont really need a UV filter, the camera has one built in.
I use no filters on any of my lenses except the 17-40L only cause the manual said it needs it for protection.
Honestly I have a Canon camera I try to stick with Canon lenses and filters. I trust then with the lens why not trust them with the filter.
You can answer your own question if you have a DSLR, how?
Put the filter on and take a photo, take the filter off and take a photo.
Then the photographer that owns the equipment can compare and then make the judgement.
I kind of regret getting those filters, had actually planned to only get the best possible 77mm circ pol.
Should have done more research, instead of beeing talked into something at the moment.
I will try the kenko circ pol to experiment, but the other two I guess only for special protection in bad conditions.
So the best 77mm circular polarizer filter iyo is?
Cameras don't have filters, lenses do.
You may be thinking of the antialising filter in front of the sensor?
No lens I've ever heard of has a built in filter.
And I agree with EB-1.
Get at LEAST the Hoya Super HMC if you are going to use a filter.
I have a Marumi circular polarizer and it's OK but I only paid ten bucks for it.
I think DSLR does have IR filters in front of the CMOS to filter out the IR. For lens filters, I tend to stick with Hoya, Heliopan, B+W and Nikon. For wide angle lenses, I like Nikon and Heliopan 'cos of the wider rim.
I was told that they are the same company by a very reputable dealer whom I trust but he also told me that the Kenko L37 Super Pro UV filter was exactly the same multi-coated glass as the more expensive Hoya version but was much better value because of the different branding.
As he sold both brands and they were both in stock, he had no axe to grind.
