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Manual
Photo Finish OPTIc2.NET
Page 18
5.2 Focusing the Camera
An important factor to receive good quality photo finish images is to focus the camera. Only a
good adjustment of the aperture (focus) guarantees good pictures. Additionally, it is im-
portant that you select the correct scan rate.
5.2.1 Adjustment of Focus (Aperture)
Adjust the aperture with the first (front) ring of the lens
(for manual lenses). If you have a motorized zoom
execute the adjustment from the OPTIc2NET soft-
ware on the PC (see chapter 7.4 Motor Zoom Lens
Adjustment.
Adjust the zoom so that you see the required finish
area on the monitor. Look at the middle part of the
finish line. The more details you see at this part of the
picture the better is the adjustment.
5.2.2 Scan Rate
The finish line is scanned by the photo finish
camera between 100 and 3000 times per sec-
ond. The adjustable scan rate depends on the
speed of the object that you want to record and
of the distance between the camera and the
recorded object.
As reference value for the scan rate for different
sports at a full vertical camera resolution of
1360 pixel, refer to below stated table (please
note that the given values may vary extremely if
one of the above given parameter does not ap-
ply, values stated in lines per second).
•
Athletics:
1200 to 1800
•
Horse Racing – Gallop: 1200 to 3000
•
Horse Racing – Trotting: 1200 to 2000
•
Rowing:
100 to 250
•
Cycling – Street:
2000 to 3000
•
Cycling – Track:
2500 to 3000
•
Greyhound:
1000 to 1500
•
Short Track:
400 to 1000
•
Cross Country Skiing:
1700 to 2700
•
Biathlon:
1700 to 2700
•
Ski Cross:
2000 to 3000
•
Boarder Cross:
2000 to 3000
•
Ski Alpine:
2000 to 3000
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