The Heliopan Series 7 Infrared RG 830 (87C) Filter is used for infrared photography with digital cameras and specialized infrared film. This nearly opaque filter blocks all visible light up to 830nm, 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 830nm    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 830nm 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. How many stops of light do you loose with this filter?

A: I don't have the exact figures with me here, but on a bright full-sun day my exposures using a Canon 5D MKIV and Canon 70-200 2.8 IS was 30 seconds @ f/2.8, 200 ISO. Hope that helps!

Q: 2. Will this suit a p-series cokin holder?

A: No, it would not. The LEE Filters Gel Snap (4x4 Filter Holder) for Lenses up to 82mm B&H # LEGS would be recommended for use with the Kodak 4x4 (100mm) #87C Opaque Infrared Wratten 2 Gel Filter.

Q: 3. How many stops of light should we compensate for with this lens?

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

Q: 4. What is the range of filter diameters available goth the Series 7 & 8 filters?

A: I'm not sure I understand the question, can you rephrase?

Q: 5. Will it leave some soft color? Or will it always look B&W? Or, was the sample image converted to B&W?Thanks,MJ

A: That filter only lets the infrared spectrum of light to come through and hit the sensor. And IR light is Red. So you can convert it to black and white or change the white color balance to achieve different IR color effects. You can do all this in post with programs like Photoshop or Lightroom.

Q: 6. will it work with a Pentax 645D?

A: mmmmI' don't think soThat camera is too new.The IR filters works better with older digital cameras like the Nikon D50, D70 and D80, D100 (2001 - 2006)

Q: 7. 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: 8. 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: 9. Would this fit a Cokin Z series filter holder?

A: While this filter is the same width as the filters used in the Cokin Z holder, it would have a very loose fit since they are thinner.

Q: 10. 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.