Depth-Of-Field Scale; Infrared Index - Minolta 50-135MM F3.5 MD ZOOM Owner's Manual

DEPTH-OF-FIELD SCALE
(50-135mm, 75-150mm, 70-210mm, and 100-300mm Zooms only)
With lens zoomed to a particular focal length and focused at a given point, image will be
in satisfactory focus from nearer to farther value on the distance scale, as indicated by
appropriate depth-of-field marks for aperture in use.
The depth-of-field scale can also be used to zone focus, i.e., to set focusing ring so that
depth of field covers the area where anticipated action will take place. (For more informa¬
tion on depth of field, see owner's manual for camera.)
NOTE
Zooming to longer focal lengths (at a given aperture setting and focused distance) will
decrease depth of field; zooming to shorter focal lengths will increase it.
INFRARED INDEX
(50-135mm, 75-150mm, 70-210mm and 100-300mm Zoom only)
For proper focus when using infrared films, first focus on subject as usual. Note point of
focus on distance scale opposite distance index. Attach filter to be used, then turn focusing
grip to the right, aligning same point of proper focus on distance scale with red infrared
index on lens barrel.