The Minolta 9000´s eyepiece shutter should be closed whenever you are taking photographs with the eyepiece not shielded by your head, as in remote-control photography, self-timer operation, or during long exposures. This will prevent stray light from entering through the eyepiece and affecting the exposure reading.
Eyepiece adjustment dial
This control enables near- or farsighted users to make dioptric adjustments to the eyepiece. Dioptric adjustment range is from -3 to +1 diopters.
To adjust: While looking through viewfinder, turn dial until focus frame appears sharpest. If additional correction is needed, a Minolta Eyepiece Corrector 1000 (p. 66) can be attached to te camera´s eyepiece.