Hong Kong photographer Lok Cheung found that manual focusing his Olympus E-P1 Micro Four Thirds camera was a pain because it lacked an electronic viewfinder (EVF). He then discovered that attaching a Rollei TLR viewfinder to the camera provided a makeshift EVF:
The result is really good. Although the LCD on E-P1 is not in very high resolution and you can see every single pixels with the Rollei viewfinder, manual focus is almost as fast as you can get on a true manual camera, and the viewfinder is almost directly behind the lens which even closer to SLRs and rangefinder.
LCD viewfinder attachments already exist for DSLR systems, and help make focusing easier and more precise by magnifying the LCD screen and blocking out sunlight. Using a film viewfinder to do this for an Olympus E-P1 is pretty clever.
Image credits: Photographs by lok cheung