Hoya HMC 25A Red Filter for Black & White Photography Size:72mm - $85.90 Once attached to your lens

Once attached to your lens simply rotate the outer ring of the filter while looking through your viewfinder or LCD screen until you achieve the right amount of reflection control

Filter Factor: 1 2/3 stops Glass Type: Hoya Clear Glass Transmission N/A Number of Multi-Coatings: 10 Layers / 5 per side Nano-Coating Technology No Hardened Top Layer: No Anti-Static: No Black Rimmed Glass Yes Frame Construction: Low Profile / Aluminum Front Filter Threads: Yes

Zero exposure magnifying factor

Comparison of C Series Filters:

The new frame takes extra care to prevent light leaks and bleeding around the filter that can occur during long exposures

Hoya HMC 25A Red Filter for Black & White Photography Size:72mm - $85.90 Once attached to your lensDescription The Hoya 25A red filter is especially effective for increasing contrast in black & white photography. Ideal for dramatic cloud effects in landscapes, due to its blocking of the color blue rendering those areas of the sky darker. It can also be applied creatively in color and infrared photography. The 25A blocks over 90% of the light below 650mn, transmitting only red. For Color Photography: While this filter was designed for black & white