The Tiffen 4 x 5.65" #11 Yellow-Green Filter is a basic contrast filter, primarily for use with black and white film. This yellow-green filter subtly darkens skies and lightens foliage. It is commonly associated for use with portraiture and attaining greater separation from skin tones and outdoor backgrounds.

Tiffen filters are made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch.

#11 Filter for General B&W Contrast    Subtly Darken Sky and Lighten Foliage    ColorCore Technology

Yellow-green contrast filter for black and white film subtly darkens skies and lightens foliage.

Suited for portraiture, this filter helps to separate skin tones from outdoor backgrounds.

Related Questions and Answers

Q: 1. what's the difference between Tokina Atx-i 11-20mm and Tokina Atx Pro11-20mm?

A: The atx-i series of lenses from Tokina are newer, updated versions of their lenses. According to Tokina's website, the "i" stands for "interactive", and "exterior, specifications and performance of Tokina's popular and well acknowledged so far AT-X PRO lenses are reconsidered with the contemporary cameras in mind and launched under atx-i brand."

Q: 2. Is the Nikon version compatible with a Nikon D90 camera?

A: Yes, Tokina atx-i 11-20mm f/2.8 CF Lens for Nikon F is electronically mounted compatible with Nikon D90 DSLR .

Q: 3. Is this lens weather sealed?

A: It is not listed as weather sealed, so I'll take it as a no.

Q: 4. Is the focus ring coupled with the helicoid? Does manual focusing work with power off or mechanical camera?

A: The manual focusing on the Tokina atx-i 11-20mm f/2.8 CF Lens will not work while the camera is off.

Q: 5. does it has focus hard stops ? and how much is the focus throw? i want to use it with blackmagic 6k

A: Yes, the atx-i 11-16 has hard stops on minimum and infinity when set to MF via the clutch. Focus throw is quite short; approximately 75~85 degrees.

Q: 6. Is aperture declicked?

A: No. Unit offers electronic apertures.

Q: 7. Is it compatible with Canon R10 with an adapter?

A: Tokina does not list the Tokina atx-i 11-20mm f/2.8 CF Lens for Canon EF specifically, but they say Tokina EF-mount lenses that are made after 2020 should work with the Canon Mount Adapter EF-EOS R (https://bhpho.to/2wL8wZY).

Q: 8. Just to be sure, the Canon version is an EF not EF-S mount, correct? I'm confused, because the description states it's optimized for APSC sensors.

A: This lens is an EF mount, but it is formatted for an APS-C sensor. That being said, it does not have the additional flange like a Canon brand EF-S lens offers.

Q: 9. Does this lens fit Canon Rebel T7?

A: Yes, the Tokina atx-i 11-20mm f/2.8 CF Lens for Canon EF will work on the Canon Rebel T7.

Q: 10. Is it compatible with a Canon EOS RP that has an EF adaptor?

A: Yes, but this is a cropped sensor lens and will only use a portion of your sensor and thereby getting only about 40% resolution.