This reducer is designed to shorten the effective focal length. This allows shorter exposure times and a wider field of view for astrophotographers. Since you can obtain a wide field of view, it becomes easier to capture nebulae and star clusters that have spread.
Reduce the focal length (0.67x) and make F-ratio fast. It also has the effect of reducing the aberration near the edge of imaging field.
Specs
Usable on
ED81S, ED81S II, ED103S, ED115S
Lens coating
Fully multicoated
Prime focus photography
Wide photo adapter 60mm and T-ring are needed separately
