The Heliopan 24mm RG 665 Infrared Filteris designed to help capture images of how a subject reflects or transmits infrared light.

Infrared light waves occupy the space in the electromagnetic spectrum behind visible light due to their longer wavelengths. Many surfaces and materials react to, or emit infrared light waves differently than visible light waves, which provide the potential for photographs of subjects or subject properties that are otherwise invisible to the human eye. Such images require an infrared-sensitive medium such as infrared film or a digital photographic sensor which may be more effective when used without the infrared-blocking filters that are frequently built over them.

Conventional light sources such as the sun, photographic strobes, or incandescent lighting may be used to provide infrared illumination. However, because infrared films or digital photographic sensors can be more sensitive to the relatively higher energy and shorter-wavelength visible light those sources also emit, the effects of infrared light can be otherwise obscured. The Heliopan 24mm RG 665 Infrared Filter makes it possible to capture images of how subjects are illuminated by infrared light by blocking near-infrared, visible, and ultraviolet light waves while allowing 90% of infrared light waves 665nm or greater into the lens it is mounted onto.

This filter is constructed from Schott glass for increased optical clarity and features a thin brass filter ring to minimize the potential for vignetting while enhancing durability and jamming prevention.

For Infrared Images    90% of IR 665nm or Above Can Pass    Blocks Near-IR, Visible, and UV Light    ~30-40x Filter Factor, ~5.0-5.5 Stops    Schott Glass Construction    Multi-Coated    24mm Front Filter Threads    Thin, Brass Filter Ring    Plastic Case

• Designed for use with infrared film or digital camera sensors by filtering out near-infrared, visible, and ultraviolet light
• Allows 90% of infrared light waves beginning at 665nm to pass through
• Effective for infrared films or other media sensitive to infrared wavelengths 665nm or above
• Constructed from Schott glass for optical clarity
• Each glass surface includes four layers of anti-reflection coating to prevent internal ghosting and reflections
• Filter factor of approximately 30x to 40x reduces exposure by about 5.0 to 5.5 stops
• Thin, brass filter ring helps to prevent vignetting, jamming, and provides additional strength
• 24mm front filter threads allow for use with other filters
• Plastic case for storage and transport

Related Questions and Answers

Q: 1. Can you use this if your camera's internal sensor has already had an IR conversion?

A: Hi Bill-It did not work for my Canon 7D. It seems one needs different kind of camera or make a permanent conversion of the camera body to disable the built in capability of IR conversion. Subrata

Q: 2. will this work on sony alpha cameras? i heard you need to modify the camera in order for this to work? I have a7s and a6500

A: The filter works perfectly without any changes to the camera, do you need to do some post processing and you can check on YouTube. I highly recommend the filter

Q: 3. Will this filter work on a Fuji XE 2?

A: No it will not Infrared Filters are not made for digital cameras , all digital cameras have IR blocking filter and this filter blocks the other visible light

Q: 4. How well will this work with a near-IR film like Ilford SFX?

A: The Ice 52mm HB760 Infrared Filter blocks UV / Visible Light under 760nm. This will not work with Ilford SFX 200 Black and White Negative Film that only has sensitivity up to 740nm. Near IR film does not have the sensitivity to work with this filter.

Q: 5. hI, will this work on nikon p900? if so, will I have to modify the camera..thanks

A: This lens is designed for SLR and DSLR cameras.

Q: 6. All of my filters are for 1.25 mm . My camera is a Canon T3 Rebel . Will this filter fit in my lenses (1.25 mm) or on my camera?

A: The Heliopan 30mm RG 1000 Infrared Filter will fit a lens with a 30mm diameter front

Q: 7. What is the response curve of this filter?

A: Unfortunately, the Ice 77mm HB950 Infrared Filter does not have a published response curve according to the manufacturer.

Q: 8. I recently purchased a Nikon D7100. What kind of results, if any, can I expect if I put one of these filters on it?

A: You may not get the expected results! Most cameras would not give you the effect unless you convert the camera, which will be permanent and expensive too! There are some old models which do not have built in ir cancellation mechanisms. Those are the ones which can generate ir effects.

Q: 9. What size in millimetres is Series 7 or 8?

A: The diameter of this Heliopan Series 8 Infrared RG 715 (88A) Filter is 63.5mm, but this filter does lack threading.

Q: 10. What sizes, expressed in mm, are Series 7 filters available in?

A: A series 7 filter is a unique size as all series filters are. The fiter size in millimeters would be equivalent to 50.8mm.