The Heliopan RG 665 Infrared Filter Series 7is used for infrared photography with digital cameras and specialized infrared film. This nearly opaque filter blocks all visible light up to 665nm, enabling recording of subject matter and scenes that are not visible under normal conditions. Due to the nature of infrared photography, the filter factor for this filter is highly variable and depends largely on the ISO sensitivity in use and lighting conditions. Additionally, it is recommended that auto-exposure and autofocus functions are disabled during use for greater control over the results.

The front and rear surfaces of the filter both feature a single anti-reflection coating. Each coating helps to increase light transmission by reducing reflections, scattered light, and ghosting. Additionally, they offer protection to the filter substrate while helping to keep the glass clean for longer than uncoated glass.

This Heliopan filter is constructed from Schott glass for increased optical clarity and color fidelity. It features a brass filter ring for enhanced durability.

Used for Infrared Photography    Blocks Visible Light Up to 665nm    Compatible with Most Digital Cameras    Can Be Used with Infrared-Type Film    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring

Used for infrared photography applications with digital cameras and specialized IR film.

Blocks all visible light up to 665nm for photographing subjects and details that are not normally visible.

Variable filter factor depending on ISO sensitivity and lighting conditions.

Single coatings on both the front and rear offer protection to the glass and help to improve light transmission and image quality.

Constructed from Schott glass for optical clarity.

Brass filter ring provides additional strength.

Related Questions and Answers

Q: 1. 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: 2. Hello! is the holder ring provided with this filter? I need to fit this filter on a 52mm thread lens

A: The Heliopan Series 8 Infrared RG 850 Filter listed above is designed for usage on lenses that have a Series 8 bayonet filter mount. We have no lens mount adapters that would be compatible to connect this filter onto a lens that uses 52mm filter threads. If you own a lens with 52mm filter threads, I would instead recommend the Heliopan 52mm RG 850 Infrared Filter, B&H # HEIR85052, for your usage needs.

Q: 3. I understand this is a Slim Mount Design/Retains Front Threads . Can I put the 49mm snap on lens cap on the filter? This is for the Olympus OM 50 1.2 lens and lens cap.

A: Yes. Since the Heliopan 49mm Protection Filter has front threads, it will be able to grip a standard snap-on/pinch lens cap.

Q: 4. Will this fit on a rolleiflex 2.8d?

A: Yes, a Bay 3 or bay III filter will fit on the lenses of a Rolleiflex 2.8 D.

Q: 5. Can these be used in digital cameras? Namely, Olympus E-M10's/ Thank you.

A: The Cokin P Series Infrared Filter Kit is designed for use with infrared film. You would need a specially modified digital camera in order to use it.

Q: 6. How many stops of light should we compensate for with this lens?

A: The Hoya R72 Infrared Filter blocks about 5-6 stops.

Q: 7. 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.

Q: 8. Is this compatible with Pentax K70?

A: The Hoya 62mm R72 Infrared Filter is compatible with the K70. As for results it will vary depending on settings and the scene/shot.

Q: 9. Hello, can I use this filter with my Canon EOS Rebel T5i?

A: there are some youtube videos on testing your sensory if it is responsive to IR by using a home device remote controller; a difficult lens to use as is very dense to light and hard to focus well; so far, my results are disappointing; good luck

Q: 10. How much do you have to compensate for light loss?

A: The R72 drops you down approximately 5 to 7 stops.