Yashica CONTAX RTS Gebrauchsanweisung Seite 66

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DEPTH-OF-FIELD PREVIEW BUTTON/MIRROR LOCK
Depth-of-Field Preview Button
Although the viewfinder of your CONTAX RTS always provides view-
ing at fu II aperture, depression of this button stops down the lens tothe
preselected aperture, thus enabling depth-of-field preview.
Avoid tripping the shutter while depressing the depth-of-field pre-
view button because it will cause exposure inaccuracy.
Mirror Lock
In photomicrography and extreme close-up photography, better re-
sults can be obtained by making exposure with the deflection mirror
locked in flip-up position.
To lock the mirror, turn the mirror lock lever to the right until the white
line is set horizontal to the camera base. Then , push in the depth-of-
field preview button . The button wi II be locked in pushed-in state and
the diaphragm will close down to the preselected aperture.
Before locking the mirror in flip-up position, compose , focus and
make exposure adjustment.
After making the exposure , reset the mirror to its original viewing
position . As soon as the mirror resets to its viewing position , the
depth-of-field preview button will return to its original position .
The mirror lock lever can be operated before or after film wind.
The automatic exposure control will not work when the mirror is
locked in flip-up position.
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