Pentax 90MC IQZoom 90MC Manual - Page 39

Hard-to-autofocus-subjects

Get Pentax 90MC - IQ Zoom Quartz Date Camera PDF manuals and user guides
UPC - 027075040274
View all Pentax 90MC manuals
Add to My Manuals
Save this manual to your list of manuals

Page 39 highlights

HARD-TO-AUTOFOCUS-SUBJECTS on) .7. C. 3 Wh.l3 depressing the shutter release button halfway, re-aim the camera or recompose the picture, then release the shutter. Note: • You can release focus lock simply by lifting your finger from the shutter release button. The autofocus system is highly precise, but not perfect. Some subjects may not focus as you wish. In such a case, use the focus-lock technique on a subject near the actual one and equidistant from the lens. Situations that may fool autofocus system include: a)Extremely low-contrast subjects such as a white wall or blue sky in the autofocus frame. b)Subjects which don't reflect much light in the autofocus frame. c)Subjects which are moving too fast. d)Subjects with horizontal lines or with finely complex or detailed pattern in the autofocus frame. e)Multiple subjects in foreground of the autofocus frame. f) Subjects positioned against reflected light or strong backlight or with extremely bright background. 35

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
HARD-TO-AUTOFOCUS-SUBJECTS
on)
.7.
C.
3
Wh
.
l3
depressing
the
shutter
release
but-
ton
halfway,
re
-aim
the
camera
or
recom-
pose
the
picture,
then
release
the
shutter.
Note:
•
You
can
release
focus
lock
simply
by
lifting
your
finger
from
the
shutter
release
button.
The
autofocus
system
is
highly
precise,
but
not
perfect.
Some
subjects
may
not
focus
as
you
wish.
In
such
a
case,
use
the
focus
-lock
technique
on
a
subject
near
the
actual
one
and
equidistant
from
the
lens.
Situations
that
may
fool
autofocus
system
include:
a)Extremely
low
-contrast
subjects
such
as
a
white
wall
or
blue
sky
in
the
autofocus
frame.
b)Subjects
which
don't
reflect
much
light
in
the
autofocus
frame.
c)Subjects
which
are
moving
too
fast.
d)Subjects
with
horizontal
lines
or
with
finely
complex
or
detailed
pattern
in
the
autofocus
frame.
e)Multiple
subjects
in
foreground
of
the
autofocus
frame.
f)
Subjects
positioned
against
reflected
light
or
strong
backlight
or
with
extremely
bright
background.
35