135 Half-Frame Photography Basics: Format, Vertical Framing, and Diptych Practice

Half-Frame Format and Camera Specifications

Half-frame is a format category. The specific frame size and viewfinder method vary by camera model and should be checked according to the camera's instructions. Take the PENTAX 17 as an example: a single frame measures 17×24 mm; the film advances horizontally, and when held normally, you shoot in portrait orientation. According to RICOH IMAGING's FAQ, a roll of film labeled as 36 exposures can capture 72 half-frame images. The Olympus PEN F is also a half-frame SLR, but do not apply the exact dimensions or frame count of the PENTAX 17 to all half-frame cameras. [G-HF-01]

Composing Subjects in Portrait Orientation

Portrait orientation is suitable for accommodating taller subjects or top-to-bottom scene relationships, but the direction does not dictate the subject's placement. First, determine the focal point of the frame, then try changing the subject's position within the frame. The rule of thirds can serve as a reference for practicing composition, or you can deviate from it based on expressive needs; no single grid applies to every frame. [G-HF-02]

Practicing with Adjacent Photos as Diptychs

You can first take two complete individual photos, then try viewing them side by side when selecting images: the two may complement each other, repeat a certain shape, or create contrast. Check each subject separately, then determine whether they still convey the intended content when placed together. Diptychs are a method of selection and presentation; shooting two adjacent frames does not automatically produce a stitched or specific narrative effect. [G-HF-03]