[5] In the 1960s, as half frame cameras grew in popularity with new models such the Kodak Instamatic in 1963, concerns were raised about the true economic benefits.
[6] However unlike APS, as a separate format, half frame survives as it can be shot on standard 35 mm film, which is still widely available.
The exceptions are cameras that use vertically run film mechanisms (examples including the Konica Recorder and Belomo Agat 18).
More recently, social media use has made some see the default portrait orientation as beneficial, particularly with Instagram changing from the 1:1 aspect ratio to 4:5 and 9:16 to fit more image on a mobile device.
Technologically, the most advanced electronic half-frame camera is the Yashica Samurai single lens reflex.
[10] The earlier Olympus PEN and Konica Auto Reflex reached a pinnacle for mechanical half frame cameras by offering fully functional rangefinder styled options such as the Olympus Pen and SLR options respectively.
The Auto Reflex SLR gives access to the full Konica AR lens library in half frame, and additionally Nikon F, M42, and Leica M mount with adapters under the provision of stop down metering.
In other cases, the smaller size of the cameras at the time, coupled with the increase in image quality saw half frame as a viable replacement option for the 110 film format.
[citation needed] This article was originally based on "Half-frame" in Camerapedia, retrieved at an unknown date under the GNU Free Documentation License.