The 4 x 4" Schneider ND Filter has several uses and offers the possibility to achieve otherwise unachievable results. They enable the shooter to adjust exposure without affecting color balance. ND filters appear gray and reduce the amount of light reaching the film. 

Determining which neutral density filter yields ideal results for any given lighting situation takes knowledge, experience and a collection of such filters. Speaking generally, the 2-stop value (ND 0.6) effectively compensates average situations.

0.9 Optical Density    Water White Glass

To enable slow shutter speeds to be used, especially with high speed films, to record movement in subjects such as waterfalls, clouds, or cars

To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background

To decrease the effective ISO of high speed film (above ISO 400) and allow it to be used outdoors in bright situations

To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure

Schneider filters feature crystal clear, water-white optical glass, protected against edge-chipping and delamination by Schneider's unique Edge Seal, which also significantly reduces edge reflections and flare

Related Questions and Answers

Q: 1. Is this lens compatible with my antique Canon 10D?

A: Yes, it is compatible.

Q: 2. Will this lens work with the Canon T6i.

A: Im using mine on the the Rebel T5 (T5is little brother), but the lens-to-camera fitting structure is the same. Looks like from other posts it fits the 3 and 7, so Id say youre good! B&H had fast delivery and its a nice lens at a fraction of the Canon price.

Q: 3. 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: 4. Will this work with a D80?

A: Yes, it is fully compatible with the D80.

Q: 5. Does it have image stabilization?

A: I got the lens with the Sony A mount. That does not have vibration compensation since the Sony cameras typically have in body vibration compensation. The mounts for Nikon and Canon do have vibration compensation. There is a newer version of this lens available for Canon and Nikon mounts, but I am not sure how much better the newer version can be than the original, as this lens has been fabulous with my Sony A65, focusing quickly and accurately, while giving an incredible approximately 900 times zoom with my APS-C sensor. This lens is one of the best purchases I have ever made.

Q: 6. 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: 7. Does the lens have international warranty? or the 6 year warranty is applicable only in the country one buys? For instance, am planning to buy in the US and use it mostly in India

A: Tamron's included 6 year warranty is valid in the USA.

Q: 8. This lens is good for wildlife photography ? with Nikon 7500

A: Yes, this lens would be suitable for wildlife photography.

Q: 9. Will this lenswork with a canon 5D mark II?

A: If you order the lens with the EF Canon mount then yes. This lens comes manufactured with different mounts. I have used it with both my 5D and 7D.

Q: 10. 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!!