spejlløse

Spejlløse is a Danish term that describes cameras and photographic equipment without a reflex mirror. The word is formed from spejl, meaning mirror, and løse, meaning without, and is used to distinguish mirrorless systems from traditional DSLR cameras that rely on an internal mirror and optical viewfinder.

Technical characteristics

Spejlløse cameras capture images directly onto a digital sensor, using electronic viewfinders or rear LCD screens for framing and focusing. They typically employ interchangeable lenses and have a shorter flange focal distance, which allows for compact body designs and a variety of lens mounts. Autofocus and exposure systems are largely driven by on-sensor technology, including phase-detection or contrast-detection methods, often enhanced by sophisticated on-sensor PDAF or depth data.

History and adoption

The term gained prominence as mirrorless camera systems gained market share starting in the late 2000s and early 2010s. Early popular lines included compact mirrorless systems from several manufacturers that emphasized portability and video capabilities. Over the following years, many major brands expanded their mirrorless offerings, leading to broad adoption in professional and enthusiast photography alike.

Advantages and limitations

Key advantages of spejlløse systems include lighter and smaller bodies, quieter operation, and flexible video support. They also offer technology advantages such as advanced live-view focusing and the ability to use a wide range of lenses with adapters. Limitations that have been discussed include battery life differences compared with some DSLRs, potential EVF brightness considerations in certain models, and the need for ecosystem development across mounts and lenses.

See also

Mirrorless camera, DSLR, electronic viewfinder.