Tiffen 6.6x6.6" Yellow #12 Glass Filter for Black & White Film Impact R2542-SGW It is also very secure

It is also very secure because its fiber optic signals cannot be easily tapped

6" minimum working distance

SANUS LL11 Super Slim Low-Profile Wall Mount

2% second harmonic Maximum Output Level Maximum output from 20 to 40 kHz is +23 dBu Noise Measured at Main Output

Tiffen 6.6x6.6" Yellow #12 Glass Filter for Black & White Film Impact R2542-SGW It is also very secureYellow #12 is commonly used for a noticeable increase in contrast with black and white films. This filter is glass and measures 165 x 165 mm (6. 6x6. 6") x 4 mm thick. Especially useful for clear contrast between blue sky with clouds and foreground Recommended as a basic filter for use with Kodak Aero Ektachrome Infrared film Type Yellow Size 6. 6x6. 6" (165 x 165 mm) Grade 12 Filter Factor 2 (+1 stop) Multi Coated No Rotating No Effect Contrast