Pentax SMC -FA Camera Lens User Manual


 
Using the Infrared Index
If you use infrared film with an R2
or O2 filter, the point of focus differs
from normal shooting (with visible
light). This means the point of focus
must be corrected.
* Infrared film cannot be used with
the MZ-S, MZ-60, and
cam-
eras since these cameras use
infrared light to detect film transport
operations.
When the subject is in focus in the view-
finder, note the point of focus on the
distance scale (shown in the left illustra-
tion). Then turn the focusing ring so the
respective point of focus on the distance
scale is aligned with the infrared index
mark, as shown in the right illustration.
* Before turning the focusing ring, set
the focus mode to manual focus.
* To determine the proper exposure,
refer to the film's instruction manual.
18
22
16
4
2.8
2
1.4
A
50
15
10
3
2
1
ft
m
8
22
16 8
11
8
5.6
22
16
4
2.8
2
1.4
A
50
15
10
3
2
ft
m
8
22
16 8
11
8
5.6