The Heliopan 34mm RG 665 Infrared Filter is 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 34mm 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    34mm 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
• 34mm front filter threads allow for use with other filters
• Plastic case for storage and transport

Related Questions and Answers

Q: 1. Good morning, if it works on the Leica M9 then it also works on the M Type 240 without adapters, right?

A: Yes, according to Leica this would work on an M Type 240.

Q: 2. Would this work for the Sony A7iii? Looking at the cords it looks like it might

A: No, it only works with select Canon and Nikon cameras.

Q: 3. Will this work with the standard blackmagic 2.5K Camera?

A: It works with blackmagic 4K production camera with the SDI output set to 1920 x 1080 (not 4K). At first all monitor functions worked EXCEPT focus peaking, but the camera has built in focus peaking so that did not matter. It still bothered me so I contacted Lilliput support and they suggested doing a factory re-set. It worked! The monitor has both SDI and HDMI inputs, so if, like me, you also have a DSLR, it's perfect (for the price)

Q: 4. As a Nikon user, I notice that the models listed are older models of the D3xxx and D7xxx line. Will it also work with The D3300, D7100, and D7200?

A: This device is only compatible with the Nikon D3100, D90 & D7000.

Q: 5. will this fit on a Canon VI-T viewfinder?

A: No this is not compatible with the Canon VI-T viewfinder (only the Leica M10) and would not fit properly.

Q: 6. What is the latency (delay) on the remote? Is this suitable for fast action photography, like birds flying off a perch?

A: As far as we know there is no delay.

Q: 7. how do I fit this onto my m11?

A: The Match Technical 34mm E-Clypse MAG 1.45x Magnifying Eyecup for Leica Cameras is not compatible with the Leica M11 Rangefinder Camera.

Q: 8. Has anyone that owns this had success in getting it to start/stop video? Mine does not, despite following instructions in the manual.

A: We are sorry to hear of your issue. There is report of another B&H customer having success with this on a Canon 5D Mark II. We would suspect that maybe the IR lamp is at fault. Make sure it is properly aligned. Contact The Gradus Group the distributor of this item for further assistance. If no avail and you have had this less than 30 days, contact B&H Customer Service for exchange or refund.

Q: 9. will this work with the ME 240?

A: Yes with the adapter this would work on the ME 240.

Q: 10. Will this fit on the M11 Monochrom?

A: The Match Technical 34mm E-Clypse MAG 1.45x Magnifying Eyecup for Leica Cameras is not compatible with the viewfinder of the Leica M11 Monochrom Rangefinder Camera. This eyecup is compatible with Leica M3 to M9 rangefinder cameras.