Focusing The Camera; Adjustment Of Focus (Aperture); Scan Rate - ALGE-Timing OPTIc2 Manual

2.2

Focusing the Camera

An important factor to get 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.
2.2.1

Adjustment of Focus (Aperture)

Adjust the aperture through the first (front) ring of the lens (for manual lenses). If you have a
motorized zoom execute the adjustment from the OPTIc2 software on the PC (see chapter
"Motorzoom and Electronic Gear head).
Adjust the zoom so that you see the required finish area in 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 ad-
justment.
2.2.2

Scan Rate

The finish line is scanned by the photo finish
camera between 100 and 3000 times per
second. The adjustable scan rate depends on
the speed of the object that you want to rec-
ord and of the distance between the camera
and the recorded object.
As reference value for the scan rate for dif-
ferent sports at a full vertical camera resolu-
tion of 1360 pixel, refer to below stated table
(please note that the given values may vary
extremely if one of the above given parame-
ter does not apply, values stated in lines per
second).
•
Athletics:
•
Horse Racing – Gallop:
•
Horse Racing – Trotting: 1200 to 2000
•
Rowing:
•
Cycling – Street:
•
Cycling – Track:
•
Greyhound:
•
Short Track:
•
Cross Country Skiing:
•
Biathlon:
•
Ski Cross:
•
Boarder Cross:
•
Ski Alpine:
Photo Finish OPTIc2
1200 to 1800
1200 to 3000
100 to 250
2000 to 3000
2500 to 3000
1000 to 1500
400 to 1000
1700 to 2700
1700 to 2700
2000 to 3000
2000 to 3000
2000 to 3000
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