Nice subtle improvement to contrast of all features, contrasting both dark maria and lava flows, and bright ejecta features as well better than without filtration. Quite excellent for studying the darker lava flows on the surface of the Moon. Adds a moderate yellow tint to the overall view that is not distracting. The #8 and #11 are the best of all the color filters for adding contrast to Lunar features. The #8 for general improvement and the #11 for more detailed study of darker regolith across the maria and lava flows.