MREL Blaster's Ranger II Lt, Operation Manual

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Blaster’s Ranger II Lt Operations Manual - Edition 1.1
Lt
Maximum Exposure:
The maximum exposure time is dependent on the frame rate. It is always (1/Frame Rate) - 6msec
For example, at 500 fps, the maximum exposure is:
(1/500 sec) -6msec = 2000msec -6msec = 1994msec
For those accustomed to using shutter angle, to convert that to degrees:
(Exposure (in msec) / Frame Time) X 360o
For example, at 500fps, an exposure time of 250msec is:
(250msec / 1/500 sec) X 360o = (250 / 2000) X 360o = 45o
5.3.1 Setting the Shutter Speed:
Shutter Speed is set using the slider or edit box in the “Shutter Settings” section of the Record Settings Tab.
5.3.2 Low Light Mode:
In some special circumstances, the light available for setting up the Blaster’s Ranger II™ Lt for a high-speed event is not as bright as what
will be used for event itself. You may, for example be using some lights that can only be switched on for a short time and are not available
for camera set up.
The exposure for Low Light Mode is much longer than would be possible for a high frame rate. The default shutter speed for Low Light mode
is 41.666ms, which is the “1X” shutter speed for 24fps. The shutter speed for Low Light may be adjusted via FasMotion by checking the Low
Light box and moving the slider or editing the Low Light edit box.
To enter Low Light Mode:
Note: Be careful when using the Low Light feature! It is very easy to forget that it is on! Remember to set your exposure for the light that
will be present during the image capture.
1. Set the Shutter Speed just as you need it for the high speed event.
2. Click on the Low Light check box. A check mark will appear in the box. The edit box and the slider will become active.
3. Adjust the slider or edit the box for the desired exposure.
4. Press the Arm Button.
The camera will begin recording. You will notice that the image is darker now than in Live Mode.
5. Press Arm again to quit recording. (Click “OK” on the Warning message to Cancel.)