Sony A7RIII ILCE-7RM3A Operating Instructions Manual page 30

To remove the lens
Keep pressing the lens release
button and turn the lens in the
direction of the arrow until it stops.
Compatible lenses
Lenses compatible with this camera are as follows:
A-mount lens
E-mount lens
* Images will be recorded in APS-C size. The angle of view will correspond to
approximately 1.5 times the focal length indicated on the lens. (For example,
the angle of view will correspond to 75 mm when a 50 mm-lens is attached.)
GB
30
Lens
Lens compatible
with 35 mm full-
frame format
APS-C size
dedicated lens
Lens compatible
with 35 mm full-
frame format
APS-C size
dedicated lens
Lens release button
Compatibility with the camera

(An optional Mount Adaptor
(sold separately) compatible with
full-frame format is required)
*
(An optional Mount Adaptor
(sold separately) is required)

*