The Tiffen 3x4" Twilight Graduated Filter - Verticalhelps to specifically add a unique deep magenta to pink gradient to skies and other bright areas of an image while allowing a portion of the image to remain neutrally colored. The filter's coloring is densest at the edge and tapers to clear by the middle, with a soft-edged transition between the density and clear areas. The 2 color density provides less twilight coloration than the 3 density, but more than the 1 density filter.

This filter is 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. It measures 3 x 4" / 76.2 x 101.6mm.

2 Density Color Graduated Filter    Twilight Coloring in Select Areas    Soft-Step Graduation    ColorCore Technology

Provides a unique deep reddish magenta to pink gradient across half of the filter plane.

Graduated filter design keeps a portion of the image neutral, resulting in a more realistic look while allowing for the sky or other bright areas to take on the color of the density.

A vertical orientation filter's line of transition runs parallel to the short side of the filter.

Related Questions and Answers

Q: 1. Does this filter have any tags or other properties that allow you to align the gradient axis precisely with the camera axis?

A: No, the Tiffen 72mm Graduated Neutral Density Attenuator/Blender 1.2 Filter (4-Stop) does not have tags or any markings indicating the gradient axis.

Q: 2. Can this mount be used with the optical tube of the Celestron Nexstar 8SE (8" SCT)? - I am looking for a mount for this tube that will allow me to shift it by holding the tube and also by slow-motion controls

A: Yes, it should work

Q: 3. this lists a 10 year warrantywhere can I read the terms and conditions of the warranty?

A: Schneider's warranty provisions can be found here: http://bit.ly/108Lg6k

Q: 4. Can you use this filter on top of a Circular Polarizer?

A: yes, you can. I always do

Q: 5. does it have HT coating on lens?

A: This filter is not coated.

Q: 6. Do the Tiffen 4x4 filters use a Cokin filter holder? or what brand / size would be needed / recommended? I have a 72mm lens(18-200). I'm looking to purchase a grad-ND.6. Thank-you for your time,Janice

A: Yes, this particular Tiffen Graduated 0.9 ND filter is designed for use with the Cokin P filter holder, which you can purchase with a 72mm adapter ring included: http://bhpho.to/Uscl1gFor a 0.6 graduated ND filter, take a look at the Formatt Hitech 85mm Graduated ND 0.6 Soft Edge for Cokin P: http://bhpho.to/1xc1CV6

Q: 7. How do you connect a telescope to this mount? Do you need dovetail plates or another kind of separate connector?

A: Yes, a dovetail Vixen style plate is required. This is pretty much the standard now. B&H and most major vendors have them for sale and many new scopes come with them already. Otherwise, buy one for around 20 bucks, attach your rings to it and your ready to go. I did this with one of my older scopes. Clear skies.

Q: 8. Whats the benefits of this over the non digital version for half the price? I notice the coating and titanium ring but my question is more about image/color quality.

A: This filter uses optical quality glass, is uncoated and uses an aluminum filter ring. The Digital HT version uses Water White (highest quality) glass, is multi-coated and uses a titanium coated ring. The mulit-coating makes the glass more scratch resistant, easier to clean and less chance of reflections. The HT filters meet or exceed military specifications as well. The difference in image color/quality will be tough to see when comparing the two, the difference is more in construction quality.

Q: 9. Can a step motor be added to this mount to motorize it...???

A: None can be added to this mount.

Q: 10. Does this mount come fully assembled out of the box...?? If not, what needs to be put together...??

A: The kit comes almost fully assembled. All you need to do is attach the T-rod and screw the head into the tripod.