What other right angle viewers/magnifiers fit Olympus cameras?
The right angle viewers for the Pentax M series seem to work fine. Make sure you get an M series version though, not a K series version. A benefit of the Pentax viewer over the VariMagni Finder is that it doesn’t invert the image. The Canon Angle Finder C works beautifully on the Olympus and almost any other SLR with a rectangular eyepiece frame (even Nikons). It comes with fittings for rectangular frames of several sizes. It functions like the Olympus Varimagni Finder but has a larger entrance pupil, yielding a much brighter image. Thanks to Gary Schloss