Dreamy mist effect.

The HOYA Fog No 0.5 features a frosted surface that lightly covers the entire image with a pleasant dreamy mist effect. However, the objects in the photograph remain sharp and in contrast. The effect can vary by changing the aperture of the lens, but stopping down too much will reduce the effect.

There are two HOYA Fog filters, Fog No 0.5 and the stronger Fog No 1. Both can be used together to create an effect similar to dense fog.

The HOYA Fog No 0.5 filter uses special glass with a slit to achieve the effect. A piece of this glass is laminated with a clear optical element, giving it a special sandwich structure that creates the fog effect.

What really makes the soft effect of Fog No 0.5 unique is that it enhances the bright areas in the image in a way that makes them appear as glowing objects. It is highly recommended for night photography. Using this effect in landscape settings can allow the photographer to create a mythical atmosphere, like in a fantasy story.