Sony a7SIII Help Manual page 245

Help Guide
Interchangeable Lens Digital Camera
ILCE-7SM3
α7SIII
Release w/o Lens (still image/movie)
Sets whether or not the shutter can be released when no lens is attached.
MENU → (Shooting) → [Shutter/Silent] → [
1
Menu item details
Enable:
Releases the shutter when no lens is attached. Select [Enable] when attaching the product to an astronomical telescope,
etc.
Disable:
Does not release the shutter when a lens is not attached.
Note
Correct metering cannot be achieved when you use lenses that do not provide a lens contact, such as the lens of an
astronomical telescope. In such cases, adjust the exposure manually by checking it on the recorded image.
Release w/o Lens] → desired setting.
5-021-326-11(1) Copyright 2020 Sony Corporation
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