Sony A57 - Manual (Page 143)

143
Magnifies images with higher scale than the optical zoom (ZOOM)
S
hooti
ng
(A
dv
anc
ed operations
)
To change the setting of [Clear Image Zoom]
The default setting is [On].
MENU button t 2 t [Clear Image Zoom] t Select the
desired setting
To change the setting of [Digital Zoom]
The default setting is [Off]. If you want to use higher magnification
regardless of the deterioration of the image, set it to [On].
MENU button t 2 t [Digital Zoom] t Select the desired
setting