Sony Digital 8- TRV240 Operating Instructions Manual page 25

Recording a picture
If you record pictures with the LCD panel closed, check the picture with the viewfinder.
Adjust the viewfinder lens to your eyesight so that the indicators in the viewfinder
come into sharp focus.
Lift up the viewfinder and move the viewfinder lens adjustment lever.
Viewfinder backlight
You can change the brightness of the backlight. Select VF B.L. in the menu settings
(p. 105). Even if you adjust the VF B.L., the recorded picture will not be affected.
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