Basic Functions
FCB-EH6300(GB) A-E23-100-13(1)
MIN
MAX
AGC
CLOSE
OPEN
IRIS
Gain
Dark
Bright
IRIS curve
Gain curve
Controlled
by gain
Controlled by IRIS
Bright limit which controllable
for this unit
Data
Iris
Gain
Data
Iris
Gain
1F
F1.6
28 step
11
F1.6
0 step
1E
F1.6
26 step
10
F2
0 step
1D
F1.6
24 step
0F
F2.4
0 step
1C
F1.6
22 step
0E
F2.8
0 step
1B
F1.6
20 step
0D
F3.4
0 step
1A
F1.6
18 step
0C
F4
0 step
19
F1.6
16 step
0B
F4.8
0 step
18
F1.6
14 step
0A
F5.6
0 step
17
F1.6
12 step
09
F6.8
0 step
16
F1.6
10 step
08
F8
0 step
15
F1.6
8 step
07
F9.6
0 step
14
F1.6
6 step
06
F11
0 step
13
F1.6
4 step
05
F14
0 step
12
F1.6
2 step
00
CLOSE
0 step
When switching from the Shutter Priority mode to the
Bright mode, the shutter speed set in the Shutter
Priority mode is maintained.
Spot Exposure Mode
In Full Auto AE, the level for the entire screen is
computed and the optimum Auto Iris and Gain levels
are determined. In Spot AE, a particular section of the
subject can be designated, and then that portion of the
image can be weighted and a value computed so that
Iris and Gain can be optimized to obtain an image.
For example, in an image with a lot of movement and
with varying levels of brightness, portions without
much change can be designated as such a “spot,” and
changes to the screen can be minimized in that area.
As shown in the diagram below, a range of 16 blocks
vertically and 16 blocks horizontally can be designated.
In the case where the center is designated (shown in
black), the level is computed along with a weighted
value for the surrounding block (shaded), including the
Data
59.94/29.97
mode
50/25 mode
15
1/10000
1/10000
14
1/6000
1/6000
13
1/4000
1/3500
12
1/3000
1/2500
11
1/2000
1/1750
10
1/1500
1/1250
0F
1/1000
1/1000
0E
1/725
1/600
0D
1/500
1/425
0C
1/350
1/300
0B
1/250
1/215
0A
1/180
1/150
09
1/125
1/120
08
1/100
1/100
07
1/90
1/75
06
1/60
1/50
05
1/30
1/25
04
1/15
1/12
03
1/8
1/6
02
1/4
1/3
01
1/2
1/2
00
1/1
1/1
AE – Iris priority
The iris can be set freely by the user to 14 steps
between F1.6 and Close.
The gain and shutter speed are set automatically,
according to the brightness of the subject.
Data
Setting value
Data
Setting value
11
F1.6
0A
F5.6
10
F2
09
F6.8
0F
F2.4
08
F8
0E
F2.8
07
F9.6
0D
F3.4
06
F11
0C
F4
05
F14
0B
F4.8
00
CLOSE
AE – Manual
The shutter speed (22 steps), iris (14 steps) and gain
(15 steps) can be set freely by the user.
AE – Bright
The bright control function adjusts both gain and iris
using an internal algorithm, according to a brightness
level freely set by the user. Exposure is controlled by
gain when dark, and by iris when bright.
As both gain and iris are fixed, this mode is used when
exposing at a fixed camera sensitivity. When switching
from Full Auto or Shutter Priority Mode to Bright
Mode, the current status will be retained for a short
period of time.
Only when the AE mode is set to “Full Auto” or
“Shutter Priority,” can you switch it to “Bright.”