Quality construction, great image results.

Can get stuck on lense.

I have used the Tiffen Red #25 and Yellow #12 filters and they work great. They are constructed of a solid metal, and other that sticking on my lens a couple time have been great. The Red Filter gives me an intense contrast between sky and clouds and the yellow ups contrast in all situations. Excellent Filters.

Customer Service

Never needed it, and if they broke, is it worth the time to go deal with customer service when they cost only $11 a piece?

Similar Products Used:

B&W Filters

Cheap

The worst filter in this world

Mechanically the worst. Plastic ring. Mine distorted into ellipse after several months. Need great effort to try to put it on the lens.

Customer Service

Terrible. Almost non-existent.

Similar Products Used:

B+W

Consistency, regardless of filter size.

Uncoated glass surface doesn't need babying. Laminated construction doesn't delaminate in my experience, even with long and hard use.

Aluminum rings bind in polycarbonate filter threads.

Somewhat wider rings than other brands.

Good filters for the money and a comprehensive range of filters too. Where else can you find an IR filter? A hot mirror? An 812 warming filter? An ultra-contrast (amazing filter - it really works!)? A sepia? At any rate, they're terrific values and well-made filters. Don't let the "lack" of multi-coating put you off - just use a lens hood and save your money.

Customer Service

Not needed, but their catalog is practically a filter primer.

Similar Products Used:

Hoya, Hoya HMC/S-HMC, Nikon, B+W. Some Heliopans.