V.I.O. POV.HD User Manual - Manual (Page 42)

POV.HD
User
Manual
Tips
and
Guidelines
39
By
default,
the
dynamic
exposure
control
logic
looks
at
all
the
pixels
in
the
frame,
which
is
referred
to
as
full-­‐frame
exposure
metering .
Full
frame
metering
is
generally
the
best
overall
strategy,
but
under
some
shooting
conditions
this
approach
requires
possibly
undesirable
compromises
because
different
areas
of
the
scene
may
have
significantly
differing
lighting.
The
solution
to
this
is
to
measure
the
light
level
on
just
the
area
of
greatest
interest
to
ensure
that
it
is
recorded
optimally,
allowing
peripheral
areas
to
possibly
be
somewhat
over
or
under
exposed.
Spot
Exposure
Metering
uses
just
the
area
in
the
center
area
of
the
frame
for
measuring
the
light
level.
Under
conditions
where
the
light
levels
in
various
parts
of
the
frame
vary
greatly
over
time,
this
ensures
that
the
area
in
the
center
of
the
frame
which
is
normally
the
area
of
greatest
interest,
will
be
optimally
exposed
and
balanced.
For
example,
on
a
ride
through
dark
woods
on
a
bright
day,
you
will
move
in
and
out
of
shadow,
and
bright
patches
of
sunlit
sky
will
appear
at
various
places
on
the
frame
at
random
times,
possibly
even
when
most
of
the
scene
is
in
dark
shadow.
Using
the
Spot
exposure
window
will
prevent
these
peripheral
bright
areas
and
very
deep
shadows
from
having
any
unwanted
influence
on
the
exposure
control
applied
to
the
camera’s
view
of
trail
immediately
ahead
of
you.
Exposure
Compensation
Exposure
Compensation
allows
you
to
shift
the
exposure
level
up
or
down
from
the
level
determined
by
the
dynamic
exposure
control
logic.
Exposure
compensation
settings
provide
exposure
flexibility
similar
to
manual
adjustment
of
the
f-­‐stop
settings
on
a
DSLR
camera.
Exposure
Compensation
can
be
to
values
in
the
range
-­‐3
to
+3.
A
setting
of
0
makes
no
adjustment
to
the
automatic
exposure
setting.
Negative
settings
adjust
the
exposure
level
down;
positive
settings
adjust
the
exposure
settings
up.
Exposure
Compensation
is
most
useful
under
extreme
lighting
conditions.
On
a
very
bright
day,
with
the
sun
high
in
the
sky,
when
shooting
over
snow
or
open
water,
the
recorded
scene
may
be
too
bright
and
may
look
washed
out
and
lacking
rich
colors
as
a
result.
Adjusting
Exposure
Compensation
down
will
reduce
the
exposure
and
can
provide
better
color
contrast
and
a
richer
look.
In
this
case,
you
might
also
choose
Spot
Exposure
Metering
so
that
if
the
sun
gets
into
the
top
of
the
frame,
it
doesn’t
cause
radical
changes
in
the
automatic
metering.
On
the
other
hand,
if
the
sun
is
low
in
the
sky
and
you
are
generally
headed
toward
it,
the
sun
may
get
nearer
to
the
center
of
the
frame,
and
when
it
does,
it’s
brightness
will
override
the
rest
of
the
scene,
making
everything
else
too
dark.
Setting
Exposure
Compensation
to
a
higher
level
(even
though
this
may
seem
backward)
will
provide
better
exposure
for
things
in
the
foreground.
The
sun
will
be
overexposed
no
matter
what
you
do,
so
in
this
case
you
need
to
adjust
for
the
things
you
want
to
see
more
clearly.
A
bright
sun
snow
scene
may
require
-­‐1
to
-­‐2
exposure
compensation,
whereas
twilight/lowlight
filming
will
require
a
setting
in
the
+1
to
+3
range.
Noise
Filter
The
Noise
Filter
can
reduce
the
amount
of
noise—unwanted
small
spots
or
speckling—in
the
frame.
Speckling
is
especially
apparent
when
shooting
in
very
low
light
which
requires
maximum
exposure
levels.
The
Noise
Filter
is
either
on
or
off.
When
it
is
on
it
removes
small
specks
and
reduces
larger
ones
on
a
frame
by
frame
basis.
The
default
is
ON.
The
Noise
Filter
is
most
appropriate
when
shooting
in
low
light,
especially
if
you
are
using
Exposure
Compensation
to
add
exposure
to
the
shot.
Under
those
conditions,
speckling
can
become
intrusive.