Protective filter [for Canon 15-85]

[eddiemrg]

I have ordered the Canon 15-85, which protective filter do you suggest? Do I need one slim in order to "fight" vignetting?

I am oriented to HOYA Pro1 digital, is it slim enought?
Thanks to all of you!

[neuroanatomist]

I'd consider a B+W Nano XS-Pro mount (thin, but with front threads).

[eddiemrg]

cheaper alternatives...?

[LSV]

You want cheap? Get a non-Canon hood on Ebay -- good protection AND better IQ.  I got a good one for 4 bucks.

[eddiemrg]

mmmmh... I mean 'filter'!

[neuroanatomist]

cheaper alternatives...?

Lots of cheaper options, down to and including duct taping a piece of dirty window glass to the front of the lens. 

The best cheap option is no filter at all.

Here's the thing - you bought an expensive lens that delivers L-series optical performance.  If you're going to put an optically poor filter on it and degrade the IQ, you could have just gotten a cheaper lens and saved yourself the money.  Just sayin'.

If you want a filter, go with B+W XS-Pro Nano or MRC, or Hoya HD or Pro1 and live with the extra vignetting.

[eddiemrg]

hoya pro1 digital is cheaper than bw. This is the point, 2 good products.

Thanks for your last advice but is too much 'sentimental' than practical.

[dr croubie]

cheaper alternatives...?

Lots of cheaper options, down to and including duct taping a piece of dirty window glass to the front of the lens. 

The best cheap option is no filter at all.

I got a Tiffen UV Protector with my 15-85, cost me something like €20.
After a while I did a test comparing IQ with it on and off, the difference was so horrible that it's now gathering dust.
Cheaper would have been no filter...

[albron00]

I use on all my lenses Hoya HD. Love it.

[dtaylor]

Hoya S-HMC or HD. They have the same optical quality, but the HD is more resistant to breaks/scratches/smudges. I've repeatedly tested S-HMC filters to look for image degradation and additional flare. Not once have I found it.

The Pro1 filters are good, but actually shy of the optical quality of the S-HMC and HD. They're probably close enough that you wouldn't notice 98% of the time.

[eddiemrg]

Ok, thanks to all of you!