Sony alpha DSLR-A500 - Manual (Page 72)

72
When it is hard to rotate the diopter-adjustment dial
Adjusting the focus of the finder (diopter adjustment)
Adjust the diopter-adjustment dial
to your eyesight until the display
appears clearly in the viewfinder.
• Training the camera on a light allows you to
adjust the diopter easily.
• When the indicators do not appear clearly,
even if you adjust the diopter, it is
recommended that you use a dioptic
adjustment attachment (sold separately).
Put your fingers under the eyecup, and
slide it upward to remove the eyecup,
then adjust the diopter.