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Due to the short flange focal distance of the Sony E-mount, many lenses can be adapted to be used on the Sony E-mount, although a crop factor will have to be taken into account most of the time, since all current cameras available in this mount are APS-C only.
Minolta, Konica Minolta and Sony A-mount lenses can be used via the Sony LA-EA1[6] and LA-EA2 camera mount adapters which provide electronic contacts and electro-mechanical diaphragm control. They allow the body to control the aperture of the lens and provide automatic exposure and Exif data support. The LA-EA1 adds slow (2–7 seconds) contrast autofocus with SSM and SAM lenses, other lenses can be used with manual focus.[7] Older samples of the LA-EA1, NEX-3 and NEX-5 require a firmware update for this to work. The LA-EA2 adapter supports fast phase-detection autofocus with all A-mount lenses, including screw-driven AF lenses. However, its translucent-mirror design requires an optical element in the light path and thus causes a light fall-off of about 30% for the autofocus to work. Also, it slightly decreases image quality. The LA-EA1 does not need an optical element in the light path and thus will not change image quality in any way. Both adapters are designed to cover the APS-C format only.