Pentax MZ-60 - Manual (Page 91)

89
B
ASIC OPERA
TION
(PREP
ARA
TION)
B
ASIC OPERA
TION
(SHOO
TING)
AD
V
ANCED OPERA
TIONS
O
THERS
2. Calculating the aperture according to the camera-to-subject
distance
Aperture = Guide Number ÷ Camera-to-subject distance
If the calculated aperture value is different than an indicated f-
stop, for instance f/3, choose the next smaller aperture value.
(f/2.8 in this case).