Sony ILCE-7S - Manual (Page 67)

You cannot use the Smart Zoom function with movies.
When a power zoom lens is mounted, you cannot use [Zoom] under MENU. If you enlarge
image past the optical zoom range, the product automatically switches to another [Zoom]
function than the optical zoom.
When you use a zoom function other than the optical zoom, [Metering Mode] is fixed to
[Multi].
When you use another zoom function than the optical zoom, the following functions are
not available:
[Face Detection]
[Lock-on AF]
[ Auto Obj. Framing]
To use another zoom function than the optical zoom for movies, assign [Zoom] to the
desired button using [Custom Key Settings].
[47] How to Use Using shooting functions Using the zoom
Zoom Setting
You can select the zoom setting of the product.
1. MENU
→
(Custom Settings
) → [Zoom Setting] → desired setting.
Menu item details
Optical zoom only (default setting):
Optical zoom is activated. You can use the Smart Zoom function if you set [ Image Size]
to [M] or [S].
On:ClearImage Zoom:
Even if the zoom range of the optical zoom is exceeded, the product magnifies images within
the range in which image quality does not deteriorate significantly.
On Digital Zoom:
When the zoom range of the [ Clear Image Zoom] is exceeded, the product magnifies
images to the largest scale. However, the image quality will deteriorate.
Note
Set [Optical zoom only] if you want to magnify images within the range in which image
quality does not deteriorate.
[48] How to Use Using shooting functions Using the zoom