The Heliopan 30mm RG 715 (88A) Infrared Filter corresponds to a Wratten 88A 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 30mm RG 715 (88A) 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 715nm 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 715nm or Above Can Pass    Blocks Near-IR, Visible, and UV Light    ~120x Filter Factor, ~7 Stop    Schott Glass Construction    Multi-Coated    30mm 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 715nm to pass through
• Effective for infrared films or other media sensitive to infrared wavelengths 715nm 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 120x reduces exposure by about 7 stops
• Thin, brass filter ring helps to prevent vignetting, jamming, and provides additional strength
• 30mm front filter threads allow for use with other filters
• Plastic case for storage and transport

Related Questions and Answers

Q: 1. Can this lens be used with the Canon 90D?

A: You would be able to use this lens with the Canon 90D.

Q: 2. does this lens have a crop factor when used on aps-c sized sensors or does it remain 30mm?

A: used on an aps-c reflex canon camera, this lens is equivalent to approximately a 48mm lens. plus it is a very good lens ^^

Q: 3. Is this lens compatible with the Canon t5i?

A: Thank you for your interest in Sigma products. The 30mm f/1.4 DC HSM Art Lens for Canon is compatible with the Canon T5i.

Q: 4. Is the CA as bad as is claimed? I am considering purchasing this lens for a trip to NYC at some point soon.

A: I used the CA widely in Portugal, Spain and Paris. The lens produced superb images and an absolute essential in low light conditions. For these latter conditions, I found great and perfectly acceptable for the dollars spent.

Q: 5. Does this fit the Nikon Z mount version of the lens?

A: The Sigma Lens Hood for 30mm f/1.4 DC DN Contemporary Lens is compatible with the Nikon Z version of the Sigma 30mm f/1.4 DC DN Contemporary Lens.

Q: 6. Is this lens a good upgrade from the Nikon 35mm DX lens?

A: Can't say b/c I have never used a Nikon 35mm DX. Sorry.

Q: 7. If I'm looking for a good prime that can be used well for both portrait and landscape, is this a good choice?

A: Yes. I am very happy with this lens. I have a bevy of lenses including Leica, Nikkor, Zeiss and so forth and the sharpness and contrast in this lens is exceptional. I have used it for both landscapes (especially multi-image stitches) and portraits. It's superb on a Lumix GH5 and GX8.

Q: 8. will this lens work for the nikon d3200 camera?

A: Thank you for your interest in Sigma products. The 30mm f/1.4 DC HSM Art Lens for Nikon is compatible with the Nikon D3200.

Q: 9. Is this product new? I mean, has the product never been used?

A: The Sigma 30mm f/1.4 DC HSM Art Lens for Canon EF BH #SI3014DCHSMC is new. It has never been used before.

Q: 10. Is this compatible with the canon 600D?

A: Thank you for your interest in Sigma products. The 30mm f/1.4 DC HSM Art Lens for Canon is compatible with the Canon 600D.