Applying slight pressure on the shutter release, or the rear AF button, turns on a bright red outline of the currently active focus area. Beware though that this causes approx. The groundglass of F100 is very bright, in fact, clearly is superior to the standard EC-B screen of the F5. Another advantage is a lack of moire pattern for a DOF preview, and this holds for true macro photography as well. The layout of the viewfinder of F100 is far more discreet than on the F5.
All information is on a panel below the finder image.
There are no brightly illuminated areas outside the screen as on F5, and the only displayed colours are green on grey. This unclutters the information display to a large extent and most of the data thus are easy to read. However, being smallish and monochrome the focusing indicators are significantly less prominent on F100 than on F5, the latter camera having conspicuous red and green focus markings in its finder. The MF lens user however will find the F100's electronic focus-assisting feature of little practical value unless the camera is mounted on a tripod. This in turn makes using the camera on a tripod at an automatic mode setting awkward and impractical.