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Fill-flash
A
method
of
flash
photography which combines
flash
illumina-
tion
and ambient
light,
but
does not necessarily
attempt
to
balance the two types
of
illumination.
Flash synchronization
The timing
of
the flash
so
it fires
coincident with
the
operation
of
the
camera's shutter.
There
are
two types
of synchron
ization:
Normal
Sync which fires
the flash
at the start of
the
exposure,
and
Rear
Sync which
fires the flash
at
the
end of
the
exposure.
f-number
Number which indicates brightness
of
film plane image.
In-
creasing/decreasing
f-number is
opening/stopping
down lens
aperture.
The
f-number series
is
equivalent
to
1.4, 2, 2.S,
4, 5.6,
S,
11
, 16,
22, 32, etc. Changing one step
to
the
next larger
number
(i.e.,
from
111
1
to
1116)
decreases image
brightness
by
1/2; moving
to
nearest
lower
number doubles
the
brightness.
Guide number
The number
given
to
a
flash
bulb or electronic
flash unit to
indicate
its power. A guide number may be quoted in meters
or feet,
and
depends
on the
speed of
the
film being used.
Guide numbers quoted
assumi
ng
a
relatively
efficient
reflector
surrounds
the flash
source,
e.g.,
an
average-sized
room.
150 film speed
The international
standard
for representing film
sensitivity
(speed with which
it
reacts
to
light).
The
higher
the
num
ber,
the
greater the
sensitivity, and vice versa. A
film
speed
of
ISO
200
is twice as
fast
as
ISO
100, and
half the
speed of ISO
400 film.
LCD
Liquid
Crystal
Display. For the N6000, used
on
the
panel
on
top of camera
body
and
in
side viewfinder.
Manual flash
Flash
output
is
fixed
in
manual
flash
mode,
while flash output
power
varies according
to
selected aperture in auto
flash
mode.
Some Speed
li
ghts
including
SB-20
and SB-24 provide
selectable
manual
output
(fu ll,
1/2, 1/
4, 1/S,
1/16, etc.) and some
provide
full
output only.
Matrix metering system
An advanced camera
light
metering
system
using
a
mUlti-
segment
sensor and computer; avai lable in
Nikon
SLR
models
F-601
/N6006,
F-601M/N6000,
F4
and
F-S01/NSOOS.
A
basic
versin
is used with the Nikon F401/N4004 and F401s/N4004s
models. Matrix metering is an
exclusive
Nikon feature.
Non-TTL auto flash
A sensor measures illumination without viewing
through
camera's
lens.
5LR
Single
Lens
Reflex.
A type of camera
in
which you look
through the
camera's
lens
as you view
through the
camera
finder.
Other camera functions,
such
as light metering and
flash
control,
also operate
through the
camera's lens.
79
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