The Tiffen 4.5" #9 Yellow Filteris 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, grinding flat to a tolerance of 10,000th of an inch, and then mounting to precision metal rings.

#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, grinding flat to a tolerance of 10,000th of an inch, and then mounting to precision metal rings.

Related Questions and Answers

Q: 1. This particular cable is mentioned on Blackmagic Designs website as 12g capable at 50 meters of lenght...just wondering if this is confirmed by Canary and if anyone has had issues hitting 150' using 12g 4k?...thanks in advanced!

A: We are not aware of the exact circumstances behind the testing. However we can confirm that this Canare L-4.5CHD cable is rated to handle 12G-SDi at up to 50 meters which is 164 feet.

Q: 2. Can not find anywhere stops reduction for this filter?...not on your pages, not on Schneider's...any idea?

A: The B+W #495/022 Yellow MRC Basic Filter has a 1 stop filter factor.

Q: 3. What are the dimensions of this please?

A: The WANDRD Lens Filter Case dimensions are 4.75"H X 4.75"W X 1.75"D.

Q: 4. Will this filter fit a Zeiss 150 mm f4 lens?

A: Our research indicated that the Zeiss 150mm F/4, which is a vintage lens, has a 52mm filter thread. This filter will not work. Heliopan does offer this same filter with a 52mm Thread, it is B&H # HE852. https://bhpho.to/2Daa3x1

Q: 5. Will this filter fit on Leica screw-mount lenses (50mm Sumitar)?

A: The B+W #495/022 Yellow MRC Basic Filter (39mm) fits on any lens that has 39mm front filter threads.

Q: 6. Would it fit on Celestron E-Lux 2 inch eyepieces?

A: All filters in this set are made to fit larger 2" eyepieces. If your eyepiece has a thread for 2 inch filters, it will.

Q: 7. What is the difference between this filter and the similar B+W Yellow "BASIC" filter? Is it the mount thickness or front filter threads?

A: Optically they are the same filters. The Basic has knurling on the ring which makes it easier to grip when attaching/detaching from the lens plus the filter ring is slim making it less likely to vignette the image.

Q: 8. What is the filter factor for this yellow-green filter?

A: Hoya 67mm X0 Yellow-Green HMC Filter filter factor is 1.5 stops.

Q: 9. Does this filter block IR and UV?

A: The Alpine Astronomical Baader Green Colored Bandpass Eyepiece Filter (2") BH #ALFCFG2 • MFR #FCFG-2 does not block UV or IR rays.

Q: 10. Does this filter have a slim mount?

A: This filter does not come in a slim mount version, but it is available in an SH-PMC coated version.