The Tiffen 3 x 3" #9 (3) Yellow Filter is a basic contrast filter, primarily for use with black and white film. This medium yellow filter slightly darkens skies, helps to cut through haze, and improves overall contrast. It is a common contrast filter for black and white photography, producing an accurate tonal range and compensating for the blue sensitivity of panchromatic film.

There is a 2x filter factor with this filter, requiring an increase of 1 stop for normal exposure. 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 10,000th of an inch. This filter measures 3 x 3" / 76.2 x 76.2mm.

#9 Filter for General B&W Contrast    ColorCore Technology

Yellow contrast filter for black and white film subtly darkens skies, cuts through haze, and gives greater contrast overall.

Produces accurate tones in order to compensate for panchromatic film's blue sensitivity.

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 10,000th of an inch.

Related Questions and Answers

Q: 1. You answered the question about the 1.4ext and auto focus but if I use MF on a tripod will the 1.4 and 2x canon extenders work properly using the 5D III. Thanks

A: The Canon extenders are only compatible with a select number of Canons pro level telephoto lenses; they are not compatible with lenses from other manufacturers such as the Tamron 150-600mm. You would need to use a third party teleconverter with this lens (Tamron, Kenko, Vivitar, etc.). Autofocus will not be supported, so you will need to manually focus the lens. http://bhpho.to/1pzmipP

Q: 2. Will this lens work with a Nikon D3300?

A: Yes it will. This lens is compatible with the Nikon D3300.

Q: 3. What does the Tamron 150 x 600 lens weigh? I love it, but seems heavy

A: The Tamron SP 150-600mm f/5-6.3 Di VC USD Lens for Canon, B&H # TA1506005C, weighs 4.30 lb (1.95 kg).

Q: 4. Will this work with a EOS 77D?

A: I love my lens - just got back from 6 weeks in Africa and thank goodness I took the lens. My shots were amazing. I have a Canon EOS 70D.

Q: 5. Can I purchase a 2 visual back. I have a 2 Crayford as well as 2 eyepieces? Thanks.

A: The optical tube on the NextStar Evolution 8 is the standard Schmidt-Cassegrain telescope that Celestron has been selling for years with other types of mounts. So, 2 eyepieces and other attachments should work as well on the Evolution as they do on the other 8 Celestron SCTs makes and sells. The only thing you should keep in mind is the clearance between the back of the SCT tube and the base of the mount. It might limit your choices to accessories.

Q: 6. On a crop sensor camera D7000 are you going to be able to get a focal length of 900mm?

A: Yes, when used on a crop-sensor/DX format camera such as the D7000, the equivalent focal range would be 225-900mm.

Q: 7. WHEN USING THIS LENS ON A 7D MK II HOW MANY OF THE 65 AF POINTS WILL BE ACTIVE IN AL SRVO? ALL 65 OR FEWER?

A: Wrong section.

Q: 8. Does the zoom lock work at all focal lengths?

A: No, at the 150mm setting.

Q: 9. Is this lens weather sealed?

A: There is a rubber gasket at the lens mount but otherwise I don't believe there are any claims about weather sealing.

Q: 10. Is this compatible with the Nikon D700?

A: Tamron SP 150-600mm f/5-6.3 Di VC USD Lens for Nikon has a native Nikon F mount which is designed for Nikon DSLR cameras. The lens is also fully compatible with Nikon full frame sensor cameras such as Nikon D700 DSLR camera body.