SprintTimer Guide

SprintTimer Finish Modes

SprintTimer has three separate time measurement tools:

All three use the same functionality for starting the clock. The difference lies in the way the time is measured at the finish line. Both Photo- and Video Finish can give a 0.01 s accuracy. Photo finish is aimed at shorter races and Video finish at longer, but they overlap so much that it is worthwhile to try out both too see which you find most convenient.

Photo Finish
The camera records narrow images of the finish line. After the race those image slices are blended into one large image that shows a continuous time. The results is identical to that of the FAT systems used at all national and international competitions.

Photo Finish characteristics
+ 0.01 s resolution directly while scrolling
+ All participants on one image
+ Easy to see the order and time difference between participants
+ The runners stands out from the background if a high frame rate is used
- Image distortion, especially at low frame rates, can complicate interpretation
- Large time differences (long races) generates very large images

Video Finish
The camera uses motion detection and records images when something moves in the vicinity of the finish line. Video Finish therefore shows one full screen image for each time interval.

Video Finish characteristics
+ An image covering more than the finish line can facilitate identification
+ The time difference between participants can essentially be unlimited
- 0.01 s resolution requires dual mode

Motion Finish
Motion Finish relies purely on motion detection and does not save any images.

Motion Finish characteristics
+ Quick and easy to use
+ Direct time feedback (including voice)
- Less accurate
- Less documentation (no images)


This page is also available at sprinttimer.se/guide