Voigtländer
21/25mm Viewfinder (black)
Viewfinder for 21mm or 25mm lenses
A shoe-mounted Voigtlander viewfinder that does double-duty, giving you a bright clear image, with brightlines marking a 21mm lens and a 25mm lens. There's a parallax indicator at 25mm. This viewfinder has 4 lenses in 4 groups, magnification of ×0.42, and a sturdy metal construction.