Zoom; Focus; Auto Focus Mode; Af Sensitivity - Sony FCB-EV7520A Technical Manual

Zoom

The zoom function contains 2 functions, optical zoom
and digital zoom.
• Optical zoom
The function to zoom optically by moving the zoom
lens to change focus distance.
This can zoom up to 30×.
• Digital zoom
The function to zoom images digitally by cropping the
center part of captured images to zoom with the CMOS
image sensor.
When the zoom diameter goes up, the resolution will
go down. This can zoom up to 12×.
By combining the optical zoom and digital zoom, the
unit can zoom up to 360×.
Zoom has the following modes.
Using Standard Mode
Using Variable Mode
There are eight levels of zoom speed.
Notes
• The zoom will be stopped when a Stop Command is sent
after the zoom operation is started in Standard Mode or
Variable mode. If you do not send a Stop Command, the
zoom will be stopped after reaching the Wide end or the
Tele end.
• Direct Mode cannot be operated while zooming in
Standard Mode or Variable Mode.
Operate Direct Mode after Stop Command.
Direct Mode
Setting the zoom position enables quick
movement to the designated position.
Digital Zoom
The Zoom Mode supports, a OFF, a Combined
Mode and a Separate Mode.
Combined Mode
This is the previously existing zoom method.
After the optical zoom has reached its
maximum level, the camera switches to Digital
Zoom Mode.
Separate Mode
In this mode, Optical Zoom and Digital Zoom
can be operated separately.
You can use digital zoom magnification at any
time from within any level of optical
magnification.
Note
When you operate Direct Mode Digital Zoom
When the Digital Zoom is operated in the Direct
Mode, the Direct Zoom Position of the Inquiry
Command is not immediately reflected.
Place a wait time before reading the position.
When using the Slow Shutter, place a wait time more
than twice the shutter speed.
When not using Slow Shutter, place a wait time of 0.1
seconds or more.
About Continuous Zoom Position Reply
With ZoomDirect mode, or when zooming according
to a preset, the camera outputs zoom position data
when Continues Zoom Position Reply is set to On via a
command.
Continues Zoom Position Reply: y0 07 04 69 0p 0p 0q
0q 0q 0q FF
pp: D-Zoom Position
qqqq: Zoom Position

Focus

Focus has the following modes.
• Auto Focus Mode
The minimum focus distance is 10 mm at the optical
Wide end and 1200 mm at the optical Tele end, and is
independent of the digital zoom. The Auto Focus
(AF) function automatically adjusts the focus position
to maximise the high frequency content of the picture
in a center measurement area, taking into
consideration the high luminance and strong contrast
components.
- Normal AF Mode
This is the normal mode for AF operations.
- Interval AF Mode
The mode used for AF movements carried out at
particular intervals. The time intervals for AF
movements and for the timing of the stops can be
set in one-second increments using the Set Time
Command. The initial setting for both is set to
5 seconds.
- Zoom Trigger Mode
When zoom position is changed, it becomes AF
mode during the pre-set value (initial setting is set
to 5 seconds). Then it stops.
• AF Sensitivity
The switching of AF sensitivity can be set.
- Normal
Reaches the highest focus speed quickly. Use this
when shooting a subject that moves frequently.
Usually, this is the most appropriate mode.
- Low
Improves the stability of the focus. When the
lighting level is low, the AF function does not take
effect, even though the brightness varies,
contributing to a stable image.

Basic Functions