miniformat

Miniformat is a term used in photography to describe very small image formats, typically referring to sensor sizes smaller than those common in compact cameras and smartphones. There is no formal industry standard; the definition varies by source. In general, miniformat covers sensors of roughly 1/3 inch and smaller (in practice, 1/4 inch, 1/5 inch, and smaller), as well as correspondingly small film formats used in early digital pocket cameras. The label is most common in German-language photography writing but is understood in broader English-language discussions as a loose category for the smallest consumer imaging sensors.

Characterized by high pixel density and small photodiodes, miniformat sensors tend to deliver higher noise at comparable ISO, reduced dynamic range, and limited low-light performance, but benefit from compact size and low cost. Depth of field is large for a given framing, making it easier to keep most of a scene in focus. Lenses for miniformat systems are generally inexpensive and compact, contributing to pocketable devices ideal for travel or casual use.

With the rise of smartphones and ultra-compact cameras, miniformat has become a common descriptor for devices that prioritize portability over image quality under challenging light. In modern discourse, it remains one of several size-based categories used by photographers to compare sensor size and expected image characteristics.