The 35 EC features a fixed 42mm f/2.8 Zuiko lens, delivering sharp images, and it uses a fully automatic exposure system. The camera operates with a programmed automatic mode that sets both aperture and shutter speed for the user, making it ideal for casual photographers who want quick, high-quality shots without manual adjustments.

One of its standout features is the selenium light meter, which powers the automatic exposure system and does not require a battery. The 35 EC also includes a parallax-corrected viewfinder, which improves framing accuracy, and its leaf shutter is extremely quiet, enhancing its appeal as a discreet, portable camera.