The Tiffen 138mm CC40M Magenta Filter is a color compensating (or color correction) filter for use when making color balance adjustments. It can be used to alter the color balance of a scene by placing in front of a light source or the lens of your camera. It can also be used to apply color corrections when used in the darkroom with an enlarger or to help pre-visualize color adjustments when viewing prints.

Magenta is the opposite of green and can be used to reduce green tones or casts within a scene or print. This magenta CC40 is more dense than a CC30 filter and less dense than a CC50 filter, and requires a 0.6 stop compensation for normal exposure results.

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 1/10,000th of an inch, then mounting to precision metal rings.

CC40M Color Compensating Filter    1.5x Filter Factor, +0.6    Achieve Proper Color Balance    Alter Color Balance    Useful for Printing and Viewing    ColorCore Technology    138mm Front Filter Threads    Plastic Case

Magenta color compensating filter for use when making color balance adjustments.

Magenta is the opposite of green and is added to reduce green tones or color casts within a scene or print.

This filter has a nominal peak density of 0.40, and a 1.5x filter factor, requiring a 0.6 stop compensation.

Plastic filter case for storage and transport.

Related Questions and Answers

Q: 1. Any problems with the firmware and if so what did you do?

A: I have not encountered any problems shooting with the Nikon D7100 nor with the Nikon D750.Have you checked to see if applies only to certain camera bodies. Sometimes firmware updates are available for specific combinations only.

Q: 2. Is compatible this lens with the Nikon TC 1.4x?

A: This lens is compatible with the Nikon TC 1.4x, however, you may not retain the use of autofocus.

Q: 3. does it come with warranty?

A: Yes, it has a manufacturer limited 6-Year Warranty

Q: 4. Is this lens compatible with Nikon D90?

A: Yes this Tamron SP 150-600mm f/5-6.3 Di VC USD Lens for Nikon is compatible with Nikon DSLR cameras, such as the Nikon D90.

Q: 5. Is this or the Sigma 150-600mm better?

A: When I was shopping the Tamron and Sigma, I found that they were essentially equivalent and neither one held a distinct advantage over the other for me. I decided on the Tamron based on price. At the time, Tamron was offering a rebate and Sigma was not. I am very happy with the purchase - no regrets.

Q: 6. Is this lens compatible with my antique Canon 10D?

A: Yes, it is compatible.

Q: 7. Is this a telescoping lense or does it rotate when zooming?

A: Telescoping and very stiff. Not the most fluid thing I've used.

Q: 8. Will the lens work with Tameron -F A teleconverter 2X N-AF. BBAR NO 7

A: I have not used it with teleconverter. I suppose it could be used although it may be somewhat uncomfortable and somewhat difficult. It is a heavy lens and its 600mm is very likely to vibrate when taking the picture. would have to see what kind of teleconverter but I guess there will be no problems

Q: 9. Will this work with a Nikon D5500?

A: I use this on my D7100, but the 5500 has the same mount and I believe the same sensor, so there is no reason it wouldn't work just fine. Best tele lens on the market at this price point!!

Q: 10. Can you tell me if the Tamron SP 150-600mm compatible with the Canon rebel xs

A: Yes, the Tamron SP 150-600 is compatible with the Canon EOS Rebel XS.