The Kolari Vision UV/IR Cut H-Alpha Filter for Canon EF-EOS R Adapterfrom Kolari Vision UV/IR Cut H-Alpha Filter for Canon EF-EOS R Adapteris compatible with the EF to EOS R drop-in filter adapter from Kolari or Canon. The filter can be used to cut out IR light when your camera's native UV/IR filter isn't strong enough and lets some IR light pass through. It's designed to 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. 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 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.

This filter requires a full spectrum modification to be made to your camera in order for the IR cut function to work properly. This 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.)

The frame is aluminum and the optics are glass with AR/AS coatings for increased transmission, reduced reflections, and easy cleaning. The filter has a wide grip and offers a lanyard attachment point for your convenience. It's thickness-matched to minimize focus shift.

Increased H-Alpha/Sulfur II Sensitivity    Requires Full Spectrum Modified Camera    Coated Glass Optics / Aluminum Frame    Storage Case Included

Related Questions and Answers

Q: 1. Is this the Pro 2 version? The picture shows Pro 2, but the description doesn't. THanks

A: Yes. The Kolari Vision UV/IR Cut Hot Mirror Magnetic Clip-in Filter for Sony E-Mount Full-Frame Cameras is the newer Pro 2 version.

Q: 2. does this filter help in astrophotography if the camera is not modified?

A: The Kolari Vision UV/IR Cut H-Alpha Pass Magnetic Clip-in Filter is not recommended for use in an unmodified camera.

Q: 3. How firm is the adjustment wheel? Is it loose like the Canon drop-in ND?

A: The adjustment wheel on the Kolari Vision RF to EF Drop-In Filter Adapter with CPL Drop-In Filter works as required.

Q: 4. Why is this not available in filter size 46mm when all other Kolari Vision lens filters are?

A: Kolari Vision does not list the reason, but checking the Kolari Vision IR Chrome Lens Filter does not come in 46mm size. You can get a larger size and use a step up ring. Like this filter, https://bhpho.to/3HlbjMQ and one of these step up rings, https://bhpho.to/3OdE1Uu.

Q: 5. does this come with clear filter?

A: Unfortunately Kolari Vision EF-EOS R Drop-In Lens Adapter with VND Drop-In Filter does not include a clear filter.

Q: 6. Will this filter help astrophotography in an unmodified Z9?

A: If the Nikon Z9 is not modified it won't help much for astrophotography. I wouldn't recommend it.

Q: 7. does this work with the eos r?

A: The Kolari Vision UV/IR Cut H-Alpha Pass Magnetic Clip-in Filter for Canon RF-Mount Cameras is compatible with the Canon EOS R Mirrorless Camera.

Q: 8. Is this Kolari filter actually compatible with the Canon brand ef-rf drop-in filter adapter?

A: Yes the The Kolari Vision VND Drop-In Filter is a 2 to 10-stop variable ND filter compatible with the EF to EOS R drop-in filter adapter from Kolari or Canon. So it can fit either brand of the drop in adapter.

Q: 9. Can I use swrill bokeh filter in meike drop in adapter for canon r6

A: The Kolari Vision Swirl Bokeh 2x Drop-In Filter for Kolari/Canon EF-EOS R Drop-In Adapter is only compatible with the Kolari Vision EF-EOS R Drop-In Lens Adapter with VND Drop-In Filter and the Canon Drop-In Filter Mount Adapter EF-EOS R with Variable ND Filter.

Q: 10. Will the filter cups for this flash fit a Godox TT600?

A: The Filter cups are the correct size for the Kolari Vision KV-FL1 Multispectral Flash with IR and UV Flash Filters. And will not fit well on the Godox TT600.