This 25' x 48" LEE Filters Sodium Filter Roll 25' x 48" 1" Corefrom LEE Filters Sodium Filter Roll 25' x 48" 1" Coreis used on tungsten light sources to blend with sodium light sources.

Gel Filter on 1" Core    48" x 25' Roll    Transmission: 34.1    X Value: 0.397    Y Value: 0.424    Absorption: 0.47

Related Questions and Answers

Q: 1. Are these heat resistant?

A: They are heat resistant to some extent. However, it's recommended to allow for at least 2-3 inches of air space between the gel and the light.

Q: 2. My camera has a fixed 49mm lens. Will this work? do I need an adapter?

A: Yes, you need a 49mm adapter. Click the link below to view; https://bhpho.to/2YWAePT

Q: 3. How thick are these gels? I'm looking for something that's about 2mm thick that has some stiffness to it. My application is to use them on submerged LED lights for fountain uplighting, cut them to size (2.5" dia.) and velcro them over the lens. Any advice? Thanks.

A: These filters are soft paper thin

Q: 4. I currently have a sony A7r with a Sony FE 24-240mm f/3.5-6.3 OSS Lens. Is this filter compatible with the lens I am using? Are there any kits or adapters I need as well? Thanks!

A: Hi Christian, Yes, it will work, you'll just need a 72mm adapter for whatever filter holder you're using. My recommendation is a Lee Filter holder and a 72mm lens filter adapter. If you have a lens that takes a larger filter size, say a 77mm, then I'd get a 77mm adapter and a 77mm to 72mm step down ring. That way you don't have too many adapters. Hope this helps.mick

Q: 5. can these be used on a 650w or 1000w tungsten fresnel light?

A: Yes you can if you attach it to the barn doors

Q: 6. Is this compatible with the SW150 original (Mark 1) system?

A: Yep it works fine with the Mark 1 system! I have both. (Jason, Australia)

Q: 7. Does anyone have a comparison on the Super Stopper compared to Lee's ProGlass 15 stop filter? Almost twice the price, is it worth it?

A: The LEE Filters 100 x 100mm ProGlass IRND 4.5 Filter (15-Stop) B&H # LEPGIRN15100 is more expensive because it combines two filters in one. Not only the ND but it also has an IR filter as well. Because digital sensor are susceptible to the infrared that get through the ND, this helps to keep your blacks from going to a very-hard-to-correct magenta color shift.

Q: 8. When buying a Neutral density filter, do you buy an adapter size for each lens size you have? That way the filter becomes interchangeable? For instance one size for a 24mm-80mm and another size for a 24mm-120mm.

A: For the Lee Big Stopper, you would need to get a filter holder such as the LEE Filters Foundation Kit (B&H # LEFK). You would then need an adapter ring to attach the filter holder to your lens(es). The size of the adapter ring would be dependent on the filter thread size of each of your lenses (any lenses with the same size filter thread could use the same adapter ring). http://bhpho.to/1lERSTT

Q: 9. Will this work with the B&H 100mm filter holder (with the correct adapter)?

A: I can only assume it would. I have been using Lee's Lens hood with built in filter holder for years and highly recommend it.

Q: 10. Would this work with the nikkor 24-70 2.8?

A: Yes sir I think work with 24-70 and adapter ring 77mm for sure