The Tiffen 4.5" Round Streak Filter 2mmfrom Tiffen 4.5" Round Streak Filter 2mmis a special effects filter designed to render a single light ray from a point light source. This filter features a single series of etched lines spaced 2mm apart from each other, which run diametrically across the filter surface. This filter is set in a non-rotating mount and can be used in conjunction with a filter holder or matte box to adjust the orientation of the light ray to suit your composition or desired effect. It is constructed from clear optical-grade glass and mounted in an aluminum filter ring.

Single Light Ray from Point Light Source    Etched Lines are Spaced 2mm Apart    Aluminum Filter Ring    Optical-Grade Glass Construction

Etched lines spaced 2mm apart produce a single ray of light from point light sources, strong highlights, reflective materials, or metallic surfaces.

Filter is designed to be used in conjunction with a matte box or filter holder for adjusting the orientation of the light streak.

Optical glass construction and clear filter substrate help to maintain the original image quality and do not affect the overall color or contrast.

Related Questions and Answers

Q: 1. Will this work with sigma 18-35 without vignetting ?

A: This product may cause vignetting at the widest focal length.

Q: 2. Multi coated on the filter for Anti-Reflective?

A: This filter does feature anti-reflection multicoating.

Q: 3. Does this include the side boards? They are not mentioned on the in the box list?

A: Yes this includes the sideboards, both handles and the seat.

Q: 4. This can use on sigma 18-35 without vignetting?

A: It has not been tested on the Sigma 18-35mm lens specifically but since it has the step up ring, it most likely would not vignette.

Q: 5. how does this attach to the flash ????

A: The Pocketbox mounts to the flash with the attached elastic and hook and loop strap.

Q: 6. What is its exact weight? B& h says 243.9 lbs

A: The weight of the Matthews Round-D-Round Doorway Dolly unboxed is about 260 lbs.

Q: 7. Can you remove the seating column?

A: Yes, the seating column may be removed.

Q: 8. Does anyone know the range of adjustable width?

A: There are no specification on the manufacture website. I would advise contacting the manufacture direct. Alpine Astronomical Website http://www.alpineastro.com/ Email sales@alpineastro.com

Q: 9. Does this filter rotate once it's mounted like the True-Streak filters do?

A: This filter does not rotate once mounted.

Q: 10. Is the front of the cinemorph thread able? Cause im planning to thread a black pro mist and variable nd filter both size 82mm , so i need to use another step up rings on top of the cinemorph itself

A: The Vid-Atlantic 77mm CineMorph Blue Streak Filter with 72-77mm Step-Up Ring, BH #VIVAMP77CBLU, has 77mm front accessory filter threads. As such, the Vid-Atlantic 77mm CineMorph will work with 77mm screw-in filters, though you will need a step-up ring for larger filters. If you have filters that have 82mm filter threads, I would then also recommend purchasing the Sensei PRO 77-82mm Aluminum Step-Up Ring, B&H # SESURPA7782, for your usage needs.