Sony EVI-H100V User Manual

10

The camera employs a 20× optical zoom lens combined

with a digital zoom function; this camera allows you to

zoom up to 240×.


The horizontal angle of view (1080i mode) is

approximately 55.4 degrees (wide end) to 2.9 degrees

(tele end).

Digital Zoom enlarges the center of the subject by

expanding each image in both the vertical and

horizontal directions. When 240× zoom is used, the

number of effective picture elements in each direction

reduces to

1

/

12

and the overall resolution deteriorates.

You can activate the zoom in the following ways with a

VISCA command.

There are eight levels of zoom speed.

Setting the zoom position enables quick movement

to the designated position.

Focus has the following modes, all of which can be set

using VISCA Commands.


 The minimum focus distance is 10 mm at the optical

wide end and 800 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.

This is the normal mode for AF operations.

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 value for both is set to five

seconds.

When the zoom is changed, the pre-set value

(initially set at 5 seconds) becomes that for AF

Mode. Then, it stops.

AF sensitivity can be set to either Normal or LOW.

Reaches the highest focus speed quickly. Use this

when shooting a subject that moves frequently.

Usually, this is the most appropriate mode.

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.



 Manual Focus has both a Standard Speed Mode and

a Variable Speed Mode. Standard Speed Mode

focuses at a fixed rate of speed. Variable Speed Mode

has eight speed levels that can be set using a VISCA

Command.