Red Enhancer means "Red Enhancer" and is also known as a Didymium filter or Intensifier. This filter, made of hardened glass with four times the impact resistance and an aluminum frame, enhances contrast and increases color saturation due to its special coloration. Red, orange, and brown particularly benefit from the use of the Red Enhancer.

The key advantage is that the use of the filter has little effect on other colors. This color filter is especially suitable for architecture when it comes to emphasizing specific areas. Naturally, the use of the Hoya Red Enhancer is highly recommended for autumn foliage or in rocky environments.