Sony ILCE-6500 Manual page 338

You can also assign the [Zoom] function to the desired button by selecting MENU →
(Camera Settings2) → [Custom Key(Shoot.)].
[358] List of MENU items
Zoom Setting
You can select the zoom setting of the product.
MENU →
1
Menu item details
Optical zoom only:
Limits the zoom range to the optical zoom. You can use the Smart Zoom function if you set [
Image Size] to [M] or [S].
On:ClearImage Zoom:
Select this setting to use Clear Image Zoom. Even if the zoom range exceeds the optical zoom,
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.
[359] List of MENU items
Zoom Ring Rotate
Assigns zoom in (T) or zoom out (W) functions to the zoom ring rotation direction. Available only
with power zoom lenses that support this function.
MENU →
1
Camera Settings2
(Camera Settings2) → [Zoom Setting] → desired setting.
Camera Settings2
(Camera Settings2) → [Zoom Ring Rotate] → desired setting.