The Tiffen Cool Blue Soft-Edge Graduated Filter 3x4"helps to specifically add a cool, purplish-blue coloration 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 4 color density provides less cool blue coloration than the 5 density, but more than the 3 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.

Note: A horizontal orientation filter's line of transition runs parallel to the long side of the filter.

4 Density Color Graduated Filter    Cool Blue Coloring in Select Areas    Soft-Step Graduation    ColorCore Technology

Provides a deep cool blue coloring to select areas of the image.

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.

Related Questions and Answers

Q: 1. What is the diameter of the center pole? Thanks!

A: A little bit smaller then 5/8"

Q: 2. Will this case hold a Vinten Vision 100 tripod head with a Vinten 2 stage legs?

A: A more suitable case is the Vinten 3340-3 Padded Soft Carrying Case - for Vinten Vision 3, Vision 6, Vision 8, Vision 11 and 2 Stage ENG Tripod Systems B&H # VI33403. https://bhpho.to/30a7ljT

Q: 3. Is the back of the unit made from plastic or metal?

A: The back is made of plastic.

Q: 4. What is the length of the stand?

A: Approximately 30-32 inches

Q: 5. What is the diameter of the screw that holds the center pole onto the desktop mount? It is not 3/8 or 1/4 20. Is it a metric size? Like M6 of something like that? I has a hex allen head, but I am looking for the thread diameter as I would like to attach a different mount to the desktop clamp base.

A: 5/8 bolt with flat base to apply pressure to table.

Q: 6. Will this fit the original Rapid Box Strip Box XL (1'x3')?

A: Yes this grid will fit the original Rapid Box Strip XL.

Q: 7. can this be set as a flash?

A: NO

Q: 8. I purchased this Nitecore UT32 headlamp. B&H sells 4 different Nitecore 18650 batteries. Which should I purchase?

A: According to Nitecore, the Nitecore 18650 Rechargeable Li-Ion Battery with Micro-USB (3.6V, 3400mAh), BH# NINL1834R would be the recommended option for the UT32. https://bhpho.to/3kuK9wd

Q: 9. Will this grid fit on a Westcott Rapid Strip Box 10 x 24?

A: Unfortunately, no, it would not. Instead, the Westcott 40° Eggcrate Grid for Rapid Box Strip 10x24" and Switch 1x2, B&H # WE2837, would be the correct option that would work for your usage needs.

Q: 10. Does this provide harsh or soft light?

A: soft light