Tiffen

Tiffen 52R25 Red Filter 52mm B&W Contrast

Deepen skies and boost foliage contrast in black-and-white photography with this optical glass red filter.

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Overview

The Tiffen 52mm #25 Red Filter is a specialized optical accessory built for black-and-white photographers who want to take full control over tonal contrast in their images. As a medium-red filter, it absorbs blue and green wavelengths of light while freely passing red tones. In monochrome images, this translates to dramatically darkened blue skies, enhanced cloud definition, and increased separation between foliage and flowers. Landscape photographers in particular benefit from the filter's ability to cut through atmospheric haze, rendering distant mountains and horizons with greater clarity and punch.

Constructed from optical glass and finished with Tiffen's standard 52mm threading, the filter maintains image quality without introducing unwanted softness or distortion. The 8x filter factor (3-stop compensation) is the trade-off for its dramatic effect — in bright daylight this is easily managed, but in overcast or low-light conditions a tripod becomes essential. For photographers who shoot both digital and film, this filter offers an analog approach to contrast control that stacks well with other darkroom or post-processing techniques. It threads directly onto any 52mm lens and adds minimal bulk, making it an easy addition to a camera bag for dedicated monochrome work.

Key Features

Enhances Black & White Contrast: Builds strong tonal separation for high‑contrast black and white photography.

Dramatic Sky Effects: Darkens skies, cuts through fog and haze, and can simulate moonlit scenes when slightly underexposed

Infrared Performance: Produces extreme contrast with infrared film, turning skies deep and foliage bright white

Exposure Compensation: 52mm Red 25 Lens Filter factor of 8 requires a +3 stop exposure increase

ColorCore Technology: Laminated optical glass construction, precision‑ground and polished, mounted in a durable metal ring

Specifications

Brand
Tiffen
Model
52R25
Filter Type
Medium-Red (#25)
Diameter
52mm
Material
Optical Glass
Filter Factor
8x (3-stop exposure increase)
Primary Application
Black-and-white photography
Effect
Darkens blue sky, enhances contrast between foliage and flowers

Frequently Asked Questions

The filter has an 8x filter factor, which means you need to increase exposure by 3 stops to compensate for the light it absorbs. Most cameras with TTL metering will handle this adjustment automatically.
While it physically works with color film or digital, it will cast a strong red tint over the entire image. It is designed primarily for black-and-white photography where it translates to tonal contrast rather than a color cast.
The #25 red filter dramatically darkens blue sky tones in monochrome images, making white clouds stand out sharply against a near-black sky. This creates a bold, dramatic landscape look that is difficult to replicate in post-processing.
This filter fits lenses with a 52mm front filter thread. If your lens uses a different thread size, you would need a step-up or step-down adapter ring.