Ethereal Effect with Glowing Highlights. The 4 × 5.6 Tiffen Glimmerglass 1/2 Filter is designed to produce glowing highlights while slightly reducing the contrast level, giving your shots an ethereal look. This is the 1/2-grade version, which provides a greater softening effect than the 1/4 and 1/8 versions, but that’s more subtle than the 1 version.

Softening Effect. In addition to lowering contrast and brightening highlights, the Glimmerglass filter also provides a softening effect that helps to smooth out facial wrinkles, blemishes, and details. This filter appears to sparkle when viewed from the subject’s perspective, which Tiffen touts as a confidence-building feature that might improve performance. It looks cool, at the very least!