The 49mm UV/IR Cut H-Alpha Pass Lens Filter from Kolari Vision cuts UV and IR light when your camera's native UV/IR filter isn't strong enough and lets some IR light pass through. It can also be used in combination with ND filters that do not cut out IR light. And it also works as a protective filter, as it causes no color cast nor exposure correction. The filter has coated Schott B270 glass. This filter features an aluminum ring threaded on both sides.

Alternatively, this filter can be used with a full spectrum modified camera to provide more than four times the sensitivity in the H-alpha (Ha) line compared to most cameras' native sensitivity, and greater than six times the sensitivity in the sulfur II line. A full spectrum modification entails manually removing the camera's low-pass filter and replacing it with a clear filter. (Kolari Vision can make the modification for you at a cost if you send in your camera to them.) This Ha filter has a similar transmission to Kolari's hot mirror filter, but with an expanded spectral response covering the H-alpha and sulfur II emission lines, making it also useful for astrophotography.

Cuts UV and IR Light    Ha/Sulfur II Increase with Full-Spectrum    Coated Glass Filter / Aluminum Ring    Dual-Side Threading

Related Questions and Answers

Q: 1. What is the thickness of this filter?

A: Unfortunately, the manufacturer does not publish a thickness measurement for these filters.

Q: 2. Will this fit Sony A7S3?

A: Yes it will!

Q: 3. Is the filter maker fixing this problem any soon? : "Cons: It doesn't have a snug fit in the Sony a7sIII. If you remove your lens and your camera body is tilting forward, it can easily fall out."

A: As of the date/time of this reply, I have not heard of a redesign of the Kase 4-In-1 UV & ND Clip-In Filter Set for Sony Alpha Cameras (MCUV/ND8/ND64/ND1000).

Q: 4. Is this compatible with the A7R5?

A: Yes, the Kase 4-In-1 UV & ND Clip-In Filter Set for Sony Alpha Cameras (MCUV/ND8/ND64/ND1000) is compatible with the Sony a7R V Mirrorless Camera.

Q: 5. Is this fits with sony a9II?

A: Yes this filter set is compatible with your Sony a9 II!

Q: 6. Does this fit Fuji X100T?

A: You would need the FUJIFILM AR-X100 Adapter Ring (Silver) to be able to use the FUJIFILM 49mm Lens Cap with the Fuji X100T. I have the link below. https://bhpho.to/3gT7sLy

Q: 7. Interesting. Is this sealed at the edges so that the sensor does not get dust on it? Or is there an airgap around the frame somewhere? I'm thinking the UV filter might be a good choice, easier to clean than a sensor if you change lens frequesntly?

A: Yes, the Kase 4-In-1 UV & ND Clip-In Filter Set for Sony Alpha Cameras is sealed to protect dust from attaching to the camera's sensor.

Q: 8. Is 43mm lens cap fit the 50-230mm lens?

A: The Fujifilm 50-230mm has a 58mm diameter which means you'll need a 58mm lens cap.

Q: 9. Does this XLR barrel adapter block Phantom power (48v)? I tried a different brand and it only worked on mics that did not need phantom power.

A: No, the Shure A15HP does not block phantom power and it does allow phantom power to pass through so it can be used with condenser microphones as well as dynamic microphones.

Q: 10. how is the quality of the ND? is it similar to the front glass ND. how it will affect the image? (sharpness , colors etc...)

A: These filters will function like any screw base ND filter. There has been no negative feedback on their performance to date.