Summary: Smart Investment

Comment: A must for your lens to protect the front glass. Better than the standard cheap filters.

Summary: Works great, i returned a Tiffen

Comment: As a long time photographer i needed this filter,would not consider buying any lens without one.
The canon was a good price and does what it says it will do.
i just returned a tiffen filter as it was not as smooth screwing on or off. so not to sound like an employee of canon this thing works. no streaks or haze when i bought it(means it's fresh)and locked it on and that is that.

Summary: Bad Quanlity

Comment: I couldn't believe I bought such item from amazon. I am really disappointed. It's the worst item i ever buy from online. I want rate this item with ZERO star.

Summary: Okay Lens but becareful ...

Comment: I recently purchase this bundled with a Canon EF 24-105mm f/4 L IS USM Lens. Because the curved glass of the lens this filter will not screw down all the way and the filter rests against the glass of the lens. I will definitely be heading down to Ritz to replace this filter immediately. I'm sure this is a nice cheap filter if it works with your lens.

Summary: Not good for Aviation Spotting.

Comment: I have a Canon 100-400L IS and this filter works good but I use this lens mostly for Aviation Spotting and the problem that I have is that when any light from the airplane like the landing gear lights are on, I'll get some very nasty reflections so I don't recommend this for this particular activity.