The Tiffen 5 x 6" Deep Green #61 Filter is a general contrast filter, primarily for use with black and white film. This dark green filter helps to lighten foliage and other green subject matter within the image while darkening red tones. The #61 filter is also used for tri-color separation and tungsten projection when used in conjunction with a #25 red and a #47 blue filter.

This filter is made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch. It measures 5 x 6" / 127 x 152.4mm.

Green Filter for Tri-Color Separation    For Black and White Contrast    ColorCore Technology

Deep green tri-color separation and tungsten projection filter when used in conjunction with a #29 red and #47 blue filters.

When used over the lens, this filter helps to lighten foliage and other green subject matter within the image while darkening red tones.

Related Questions and Answers

Q: 1. Will this filter fit on a Zeiss 28mm Biogon lens?

A: Yes, the Leica E46 will fit lenses with a standard 46mm filter thread such as the Zeiss 28mm Biogon. I use the Leica E46 Green filter on a Zeiss 50mm C Sonnar lens. However, I mostly use the excellent B+W F-Pro MRC filters at 1/3rd the cost of the Leica branding.

Q: 2. Will this unit allow control of electronic EF/RF lenses on RED DSMC3 (lenses with built-in motors?)

A: No, I'm sorry to say that the Teradek RT - CTRL.5 does not support electronic control of lenses when working with the RED ecosystem.

Q: 3. Hello, this filter has a square shape? Do you sell it in a round shape? I need to use it on a 58mm lens, do you sell any adapters to use it?

A: You can use this adapter to mount this filter to a 58mm lens: https://www.bhphotovideo.com/c/product/186726-REG/LEE_Filters_Gel_Snap_3x3_4x4_Filter.html

Q: 4. Will this stretch some to fit flashlight with a 35mm bezel?

A: The Nitecore Blue Filter for 34mm Flashlight is made for 34mm bezels. It is too small to fit onto one that is 35mm.

Q: 5. Does this filter fit a Leica Summilux-M 35mm f/1.4 ASPH. Lens (Black)? Thanks, Robert

A: Yes. The Leica Summilux-M 35mm f/1.4 ASPH takes 46mm filters.

Q: 6. What is the filter factor for the orange filter ? What exposure compensation is required because of light loss ?

A: Orange filters usually have a filter factor of 3 or 4, so a 1 2/3 or 2 stop adjustment is called for.

Q: 7. Is the leather part of the strap longer, or is it just the nylon tapes that are longer?

A: The nylon portion would be longer.

Q: 8. Is there an integration to get lens data from RED camera without having to manually calibrate lenses in the CTRL.5? Zeiss XD etc

A: Currently, the Teradek CTRL.5 3-Axis Wireless Lens Controller does not have functionality that allows you to get lens data from a RED camera without manually calibrating the lens. However, this feature may be available in later software releases.

Q: 9. Does the half damper pedal work well with this keyboard?

A: Yes, a half-damper pedal such as the Korg DS1H Piano Half Damper Switch (B&H # KODS1H) can be used with the Nautilus 61.

Q: 10. Is there a pitch modulator on the Korg nautilus 61?

A: The specs for the Nautilus do list "phase and modulatable pitch per oscillator" for the 6 Variable Phase Modulation (VPM), Waveshaper and Ring Modulation Oscillators.