Vaddio Sony EVI-D70 PTZ Camera - Manual (Page 10)

10
Basic Functions
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
specified portions; and then the Gain and Iris are set.
The value of the designated portions and the
surrounding areas should be calculated as 90% and the
rest should be set to 10%.
Horizontal 16
Vertical 16
0
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
1 2 3 4 5 6 7 8 9 A B C D E F
Exposure Compensation
Exposure compensation is a function which offsets the
internal reference brightness level used in the AE
mode by steps of 1.5 dB.
Data Step Setting value
0E 7 10.5 dB
0D 6 9 dB
0C 5 7.5 dB
0B 4 6 dB
0A 3 4.5 dB
09 2 3 dB
08 1 1.5 dB
07 0 0 dB
06 –1 –1.5 dB
05 –2 –3 dB
04 –3 –4.5 dB
03 –4 –6 dB
02 –5 –7.5 dB
01 –6 –9 dB
00 –7 –10.5 dB
Aperture Control
Aperture control is a function which adjusts the
enhancement of the edges of objects in the picture.
There are 16 levels of adjustment, starting from “no
enhancement.” When shooting text, this control may
help by making the text sharper.
Back Light Compensation
When the background of the subject is too bright, or
when the subject is too dark due to shooting in the AE
mode, back light compensation will make the subject
appear clearer.
Slow Shutter – Auto/Manual
When the Slow Shutter is set to “Auto,” this ensures
that the slow shutter is engaged automatically when the
brightness drops. This occurs only when the AE mode
is set to “Full Auto.”
“Slow Shutter Manual” is the factory setting.
ICR (IR Cut-Removable) Mode
An infrared (IR) Cut-Filter can be disengaged from the
image path for increased sensitivity in low light
environments. The ICR will automatically engage
depending on the ambient light, allowing the camera to
be effective in day/night environments.
If you normally set the IR Cut-Filter to OFF, the image
will be black and white (monochrome).