The through the wall air conditioner filteris a basic contrast filter, primarily for use with black and white film, that completely absorbs blue and green tones, enhances reds, and increases contrast for outdoor photography. It is suitable for use in tri-color separations and for photographing faded documents. There is an approximate 8-12x filter factor with this filter, requiring an increase of 3 to 3.5 stops for normal exposure.

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 durability as well as jamming prevention.

#29 Filter for Enhanced B&W Contrast    8-12x Filter Factor, +3-3.5 Stops    Bay 70 Front Filter Mount    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring

Dark red contrast filter for black and white film significantly darkens blue and green tones, cuts through haze, and increases overall contrast.

Suitable for tri-color separations as well as reproduction photography of faded documents.

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 helps to prevent jamming and provides additional strength.

Dual mounts with Bay 70 front filter mount permits combining with other filters.

Related Questions and Answers

Q: 1. Is it 15A or 20A rated?

A: The Furman PL-8 C Power Conditioner has a 15A rating featuring a high inrush magnetic circuit breaker for added protection.

Q: 2. is this available as 240v from B & H?

A: We do not offer a 240 VAC version of this product.

Q: 3. Does this support the ipad mini?

A: The iPad Mini is not supported. This is only for the iPad Air, iPad Pro 9.7, and iPad.

Q: 4. Is this a half rack unit?

A: The Furman AC-215A 2-Outlet Power Conditioner has a width dimension of 8.5", which is shy of a half-rack measurement of 9.5" (standard full rack width measures 19"). There is no specified rack mounting hardware for the Furman AC-215A 2-Outlet Power Conditioner.

Q: 5. Will the all-day filter kit for the DJI Air 3 work with the Air 3S?

A: The Freewell All-Day Filter Kit for DJI Air 3 (8-Pack) is not compatible with the DJI Air 3S Drone as the camera design is different from the Air 3.

Q: 6. are the rack mounts removable ( the brackets on the front ends)?thanksMike

A: No, the front panel is made from a 19 wide piece of metal. The rack ears are not removable.

Q: 7. Two questions here. I work in a studio setting with 500 W daylight bulbs. Will this stand the high heat generated by the bulbs? Also, with the light be distributed enough to light an entire person, standing, or objects the size of a car if I use two units?

A: Hi Rebecca. I use profoto D1 and B1 strobes versus continuous light. So, I'm not sure the heat rating of this umbrella. If you're shooting with fluorescent or LED lights, I would guess you'll be ok. If you're using anything that generates a lot of heat, I'd check with the manufacturer for what it can handle regarding heat. As far as coverage, I use this all the time for large groups as my fill light and it works great. You get a lot of diffusion for the price.

Q: 8. Is the camera on the back of iPad useable when mounted?

A: Yes, the camera is usable when mounted in the CTA Digital Articulating Wall B&H # CTPADAWSEA. This will be of course limited by the movement of the arm but the cover does not cover the camera since it allows access to all ports, buttons, and cameras.

Q: 9. Is it safe to let this sit on a carpeted floor?

A: As a power conditioner, this unit has the potential to get hot from time to time. We would recommend trying to keep this on a hard surface if possible.

Q: 10. The description indicates that the plate is white, but the picture looks like it's silver. Is this actually white?

A: It is silver only not white