43 interactive lens diagrams
Sony E mount, introduced for APS-C in 2010 and full-frame in 2013 | APS-C E and full-frame FE mirrorless
Sony E mount began with compact APS-C NEX cameras in 2010 and expanded to full-frame Alpha bodies with FE lenses in 2013. The short 18 mm flange distance made it highly adaptable, while Sony's early full-frame mirrorless push attracted extensive third-party lens support. The full-frame expansion also proved that one mirrorless mount could support both small crop bodies and professional 36 x 24 mm cameras without changing the bayonet.
The mount's single mechanical standard spans small APS-C lenses, professional full-frame GM lenses, Zeiss-branded collaborations, cinema-oriented optics, and manual-focus specialty lenses. This catalog groups E and FE under the same mount family, with image-format metadata distinguishing full-frame FE lenses from APS-C E lenses. That distinction is important because an APS-C E lens can be mechanically native while still projecting a smaller image circle.
In this catalog, Sony E/FE designs are useful for comparing how the same mount handles both compactness and very high performance. The system also shows how quickly a short-register mirrorless mount can accumulate native and adapted optical traditions, especially once third-party autofocus support becomes broad.
Flange focal distance 18 mm, bayonet mount. 0° at 12 o'clock from the camera front; the lens-side view is the horizontal mirror. Dotted strokes mark photo-scaled or schematic (not-to-scale) dimensions.