TheHB720 Infrared Filter 72mm for Photographyis 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 provides 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 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. This 72mm HB720 infrared filter makes it possible to capture images of how subjects are illuminated by infrared light by blocking ultraviolet, visible, and near-infrared light waves 720nm or less from the lens it is mounted onto. This filter is constructed from optical glass for clarity as well as color fidelity. It features a slim, aluminum alloy filter ring that helps prevent vignetting while remaining durable and lightweight.

For Infrared Images    Passes IR Light above 720nm    Blocks UV and Visible Light under 720nm    Optical Glass Construction    Slim, Aluminum Alloy Filter Ring    Front Filter Threads    Plastic Storage Case

• Designed for use with infrared film or digital camera sensors; acts by filtering out near-infrared, visible, and ultraviolet light
• Allows infrared light waves at 720nm or above to pass through
• Effective for infrared films or other media sensitive to infrared wavelengths 720nm or above
• Noncoated and constructed from optical glass for clarity
• Slim aluminum alloy filter ring helps prevent vignetting while remaining durable and lightweight
• Plastic filter case for storage and transport

Related Questions and Answers

Q: 1. Does the lens hit the filter in macro mode?

A: I using it with lens hood (lens hood comes with adaptor), so it does not.Without adaptor - it possible that it can hit.

Q: 2. IS this polarizer brass or aluminum?

A: The ring is made of aluminum.

Q: 3. How thick are these?

A: The Sensei 72-82mm Rubberized Filter Wrench (2-Pack) are about 5mm thick.

Q: 4. This product is listed as having 'slim profile', but would it be suitable for a Fujifilm XF 14mm lens?

A: The Zeiss filter would be too thick. I would recommend this B+W filter instead. Please see the following link:http://bhpho.to/1uxPx0aThe B+W filter is the same thickness but the ring is pushed out wider so there is less rick of vignetting.

Q: 5. will this work with the canon 28-70mm f2 lens?

A: Yes :) The 28-70 f/2L USM takes 95mm filters.

Q: 6. Is it very smooth and effortless to rotate the outer ring (I bought another brand with different size and its outer ring is very sticky)? Thank you very much for your help.

A: Yes it very smooth and effortless. (I too own another filter of another brand for a different lens that is difficult to turn.)

Q: 7. What is the outer diameter of this filter? I would like to use a chrosziel clamp on matte box with a step up ring, should I get the 98mm or the 100mm ring to clamp onto this filter?

A: This has a front thread size of 95mm.

Q: 8. Would this work with the Nikon Z 14-30 mm at 14 mm without vignetting?

A: I'm sorry for the worthlessly late reply. I don't know. I do know that my Heliopan "slim" filter for my Zeiss 15mm on my Nikon D800 has no vignetting.

Q: 9. Will the Olympus hood for the Olympus 75mm f/1.8 Lens fit over this filter?

A: I am not familiar with this particular lens but as far as I know any 58mm lens cap will fit.I had no problem with my Canon 58mm lens cap.

Q: 10. Will this work for video on a Sony A7S with a Sony FE 28-135mm f/4 G PZ OSS Lens?

A: I do not now. I am using with otus 85mm and ziess 15 mm. It is very good filter.