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    77mm Front Filter Threads    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 threading with 77mm front filter threads permits combining with other filters.

Related Questions and Answers

Q: 1. 10 amp is good for integred amplifier ? Marantz model 30?

A: The 10A supplied by the Furman Furman AC-215A 2-Outlet Power Conditioner is more than enough amperage to power the Marantz Model 30.

Q: 2. 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: 3. What is the width of the chassis only (not including the mounting flanges/ears)?

A: Furman has not specified the exact dimensions of the body of the PL-PLUS C without including the rack ears.

Q: 4. Can not located the dimensions of this....can you please provide all dimensions including thickness?

A: The NiSi Natural Night Filter for DJI Air 2S will have the dimensions of 1.14 x 0.94 x .12in.

Q: 5. 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: 6. 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: 7. origin?

A: Reply from Simply45. "We design all of our products in the USA and manufacture in Taiwan."

Q: 8. 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: 9. 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

Q: 10. anyone used this and have any thoughts? wondering if this filter impacts the color temp in any way. thanks!

A: The NiSi Enhanced Polarizer Filter for DJI Air 2S will increases Color & Tone Saturation, while reducing Nonmetallic Reflections & Glare.