HOYA 25A 77mm red filter

Product Description

HOYA HMC 25A 77mm Deep Red Photographic Filter

This is a professional 77mm deep red filter from HOYA, part of their high-performance HMC (Multi-Coated) series. The 25A designation indicates a specific deep red wavelength transmission, making it a powerful tool for creative photography, scientific applications, and dramatic black & white imagery.

Key Features & Specifications:

• Diameter: 77 mm (threads onto 77mm lens filter threads)

• Type: 25A Deep Red Color Filter

• Coating: HOYA HMC (High-performance Multi-Coating) for reduced reflections

• Effect: Strongly transmits red wavelengths while blocking most blue and green.

• Construction: Optical glass with durable aluminum ring

Common Uses:

• Black & White Photography: Creates extreme contrast—skies turn near-black, red subjects are dramatically lightened. Classic for dramatic landscapes.

• Creative Color Photography: Produces strong red color casts and surreal effects.

• Scientific/Technical: Infrared photography prep (with IR-sensitive sensors), fluorescence imaging, or specific wavelength isolation in lab setups.

• Videography: For stylistic or corrective color grading.