Sony ILCE-7S - Manual (Page 95)

3. Keep pressing the AEL button and focus on the subject again, then shoot the picture.
Keep holding the AEL button down while taking a shot if you want to continue
shooting with the fixed exposure. Release the button to reset the exposure.
Hint
If you select the [AEL toggle] function in [Custom Key Settings], you can lock the exposure
without holding down the AEL button.
[87] How to Use Using shooting functions Adjusting the exposure
AEL w/ shutter (still image)
Sets whether to fix the exposure when you press the shutter button halfway down.
1. MENU
→
(Custom Settings
) → [
AEL w/ shutter]
→ desired setting.
Menu item details
Auto (default setting):
Fixes the exposure after adjusting the focus automatically when you press the shutter button
halfway down when [Focus Mode] is set to [Single-shot AF].
On:
Fixes the exposure when you press the shutter button halfway down.
Off:
Does not fix the exposure when you press the shutter button halfway down. Use this mode
when you want to adjust focus and exposure separately.
The product keeps adjusting the exposure while shooting in [Cont. Shooting] or [Spd Priority
Cont.] mode.
Note
When [Focus Mode] is set to [Continuous AF] and [ AEL w/ shutter] is [Off] or [Auto],
the aperture is fixed at the moment you press the shutter button halfway. If the brightness
changes drastically during continuous shooting, release your finger from the shutter button
once, then press the shutter button halfway down again.
Operation using the AEL button is prioritized over the [ AEL w/ shutter] settings.