The half-frame format, with images in a 3:4 aspect ratio, is synonymous with the 35mm half-frame film cameras first introduced by Olympus in 1959.
Half-frame cameras, also called single-frame or split-frame cameras, uses standard 35mm film but expose only half the usual frame size (18x24mm instead of 24x36mm) of each film frame, doubling the exposures per roll of a 36 exposure film roll to around 72, o4 24 from a 12 exposure film roll.
Images are in a vertical 3:4 image aspect ratio, referred to as the 'half-frame' or 'portrait' format.
Initial criticisms of the system are directed towards the smaller negative size, which results in reduced detailing and increased grain when images are enlarged.
The format, however, gained popularity for its economy and compact designs, especially in Japan, where development was spearheaded by the popular Olympus Pen half-frame viewfinder and SLR film camera series, first introduced in the 1960s.
The 18x24mm film frame size has since been adapted to almost a similar size of 25.1x16.7mm (3:2 ratio) for C (Classic) setting on APS (Advanced Photo System) film, and the primarily 24mmx16mm sensor size for APS-C digital SLR and mirrorless cameras.
Pages
- The Half-Frame Format, 3:4 Image Aspect Ratio - A quick look at the comeback of the half-frame format as the image aspect ratio to go by for sharing and publishing images on the Net.
Posts
- Olympus E-PM2, F.Zuiko PenF 38mm f/1.8 - In half-frame mode, with images in the 3:4 image aspect ratio, shot with a vintage Olympus Pen E-PM2, and a legacy Olympus PenF F.Zuiko 38mm 1:1.8.
- Olympus E-PM2, A City Walk - A street shoot with an Olympus E-PM2 mounted with an M.Zuiko Digital 14-42mm 1:3.5~5.6 and images cropped to the portrait mode.
- Olympus VR-370, In Half-Frame Format - In the garden with the 16MP CCD Olympus VR-370, a compact point-and-shoot with a 12.5x optical zoom lens (24-300mm equivalent).
- 3:4 Image Aspect Ratio, The Half-Frame Format - As with the new Pentax 17 half-frame film camera, taking the challenge of the half-frame format on digital is just as creative.
- Helios Auto Wide 35mm f/2.8, In Portrait Mode - Image making with a Helios Auto Wide 35mm f/2.8, in portrait mode.
- Olympus Pen FT, A Night Take - Film photography favorites, image making with an Olympus Pen FT, the half-frame SLR, out on a night take.
- Olympus Pen EE-S, When It All Started - Film photography favorites, image making with an Olympus Pen EE-S, a look back to when it all started.
- Canon Autoboy Tele 6, In Half-Frame Mode - Film photography favorites, image making with a dual-mode Canon Autoboy Tele 6, in singles, diptychs, and a triptych.
- Olympus Pen EF, Images on Expired Film - Film photography favorites, image making with an Olympus Pen EF, black-and-whites on a roll of expired film.
- Olympus Pen FT, Nighthawk - Film photography favorites, image making with an Olympus Pen FT, on a night out with the F.Zuiko Auto-S 38mm F1.8.
- Olympus Pen EF, Vantage Points - Film photography favorites, image making with an Olympus Pen EF, and an eye for the best vantage points in 3:4 image frames.
- Olympus Pen EE-S, Reminiscing - Film photography favorites, image making with an Olympus Pen EE-S, the hues, light, and color of the evening on expired film.
- Olympus Pen EE-S, Catching The Light - Film photography favorites, image making with an Olympus Pen EE-S, catching lights on a roll of expired film.
- Olympus Pen EF, The Landscape - Film photography favorites, image making with an Olympus Pen EF, looking at the landscape in the 3:4 image aspect ratio.
- Olympus Pen FT, In the Garden - Film photography favorites, image making with an Olympus Pen FT, the half-frame SLR, catching the essence of the garden.
- Olympus Pen EF, Image Aspect Ratio - Film photography favorites, image making with an Olympus Pen EF, looking at the 3:4 image aspect ratio.
- Olympus Pen EF, The Portrait Format - Film photography favorites, image making with an Olympus Pen EF, looking at the 3:4 image aspect ratio or the Portrait Format.
- Olympus Pen EE-S, Moments - Film photography favorites, image making with an Olympus Pen EE-S, memories of a place often frequented.
- Olympus Pen EF, Curated Colors - Film photography favorites, image making with an Olympus Pen EF, looking at curated colors from a roll of expired film.
- Olympus Pen EE-S, Surreal Colors - Film photography favorites, image making with an Olympus Pen EE-S, and colors from a roll of expired film.
- Olympus Pen EE-S, Down the LRT Line II - Film photography favorites, image making with an Olympus Pen EE-S, a neo-nostalgic ride down the LRT line, Part II.
- Olympus Pen EE-S, Sorting The Images - Film photography favorites, image making with an Olympus Pen EE-S, sorting the images from a roll of expired film.
- Olympus Pen EE-S, Down the LRT Line, Part I - Film photography favorites, a neo-nostalgic ride down the LRT line with an Olympus Pen EE-S, Part I.
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