The Electro 35 is a rangefinder camera made by Japanese company Yashica from the mid-1960s with a coupled and fixed 1:1.7 45 mm lens.

Light levels are measured using a cadmium sulphide (CdS) photoresistor and powered by a mercury battery.

A supplementary screw-on Tele and Wide-Angle adapters were included into the kit version and could be utilised to modify the characteristics of the image taken by the fixed lens, however practical usefulness of these adapters was limited as they degraded the image quality and required separate hot-shoe mounted finder for composing, therefore making it impossible to use hot-shoe flash at the same time (for GSN/GTN models).

As the film-advance lever is operated, this slider shoots up to its original position, hitting a small rubber pad at the top.

Over time this rubber degenerates and prevents proper (internal) operation of the camera, in particular its metering circuits.

[1] The Electro 35 was designed to operate using a 5.6V mercury battery but these have now been banned due to environmental concerns.