Olympus PEN EE3
To make it easier for Olympus to take photographs of cameras that were considered difficult at the time
And introduced the series to the market.
Also, when you press the button, you can simply press the button
This is the series released.
EE (Released in 1961)
EE2 (Released in 1968)
EE3 (Released in 1973)
EF (Released in 1981)
It is a feature that the battery of the cell battery is arranged around the lens.