Didymium Enhancing filters? Do they work?

[EASmithV]

I read somewhere that filters that contained Didymium, among other things had a noticable effect in enhancing reds and yellows. Is this the case, and does anyone have any personal experience with using filters like these? Would using them on Velvia fall scenes be overkill?

 

[Mustafa Umut Sarac]

The Tiffen "ENHANCING Filter" is a combination of rare earth elements in glass. It completely removes a portion of the spectrum in the orange region. The effect is to increase the color saturation intensity of certain brown, orange, and reddish objects by eliminating the muddy tones and maximizing the crimson and scarlet components. Its most frequent use is for obtaining strongly saturated fall foliage. The effect is minimal on objects of other colors. Skin tones might be overly warm. Even after subsequent color timing or correction to balance out any unwanted bias in these other areas, the effect on reddish objects will still be apparent.


ENHANCING® Filter
Makes reds, rust browns and oranges "pop", with minimal effect on other colors. Perfect for fall foliage, earthtone rock formations, architecture, woodwork, faded rustic barns and any photos where red, brown and orange subjects should be enriched or appear more intense.
Exclusive Tiffen filter
Creates brighter, more saturated reds, rust browns and oranges
Use with Polarizer for dramatic outdoor effects
Also available in DV Scenic ENHANCING Kit 3

 

[polyglot]

You can also get versions to take a notch out of the green or blue spectrum and provide hue separation where it might not have otherwise been.

 

[somak]

I read somewhere that filters that contained Didymium, among other things had a noticable effect in enhancing reds and yellows. Is this the case, and does anyone have any personal experience with using filters like these? Would using them on Velvia fall scenes be overkill?

Yeah they work. Very good for fall colors. I use a cokin -P sized and a Marumi redhancer. However, avoid white objects like clouds as they tend to get a strong magenta cast.