Thanks for all the information, Christopher and JDMVW. No need for me to post photo of the VIDOM as everyone either knows what it looks or can find a photo of it on the Net. The trick is seeing the world upside down as I shoot. Disconcerting the first day. More fun today. HCB said it helped him frame better. I'm sensing that. I am using it on the Fuji X-E1 with a Fuji autofocus 35/1.4 (=50). Closeups are tricky--more so than with other external finders I've used. The VIDOM is wonderfully clear. Nothing I've shot is worth posting yet but I am having fun. Thanks again.