This camera was an analogue electronic camera that featured interchangeable lenses and an SLR viewfinder. It has a removable pentaprism viewfinder and focusing screen. The camera was equipped with a fixed pentaprism viewfinder which contained an LED exposure indicator. It also features a 100% viewfinder with 1x magnification. When closed, the viewfinder and lens windows are protected. They freed the camera without even looking through the viewfinder. This model has a separate viewfinder (showing a reduced image) and rangefinder. This consisted of two needles pointing along a vertical shutter-speed scale visible in the viewfinder. R-lenses support an optional electronic viewfinder. It still uses the standard K mount but lacks an optical reflex viewfinder. Later the viewfinder and rangefinder were combined. The Contax II (1936) integrated the rangefinder in the center of the viewfinder. Another improvement over the G1 was its full parallax correction viewfinder. Today most DSLRs can alternate between live view and viewing through an optical viewfinder. The Bessa R3m has a 1x viewfinder and 40/50/75/90 framelines.