Mikrotron eosens TS3, Руководство пользователя, Страница: 72 / 120

TS3 User Manual
11S-3000M
page 63
8-2 Setting Shutter Speed
The Shu tt er Speed is expressed in microseconds of exposure time.
Minimum Exposure:
Minimum exposure is 2
m
sec (regardless of frame rate)
Maximum Exposure:
The maximum exposure time is dependa n t on the frame rate. It is always
(1/Frame Rate) - 6
m
sec
For example, at 500 fps, the maximum exposure is:
(1/500 sec) -6 m sec = 2000 m sec -6 m sec = 1994 m sec
For those accustomed to using shutter angle, to convert that to degrees:
(Exposure (in
m
sec) / Frame Time) X 360
o
For example, at 500fps, an exposure time of 25
m
sec is:
(250 m sec / 1/500 sec) X 360
o
= (250 / 2000) X 360
o
= 45
o
Setting the Shutter Speed
:
Shu tt er Speed is set using the slider or edit box in the “Shu tt er Settings” section of th e R ecord Setting s
Tab. (See “Figure 8-2: Shu er Setting .)
Low Light Mode:
In some special circumstances, the light available for setting up the T S3 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 a
r e 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 shu
tt er speed for Low Light mode is 33.327ms, which is the “1X” shu tt er speed for 30 FPS.
The shu tt er speed for Low Light may be adjusted via Fas M otion b y checking the Low Light box and
moving the slider or editing the L o w 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 Shu
tt er 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 acti
v e.
3. Adjust the slider or edit the
4. Press the Arm Bu
tt on.
The camera will begin recording. You will notice th a t the image is darker now than in Live Mode.
5. Press Arm again to quit recording. (Click “OK” on the Warning message to Cancel.)
Figure 8-2: Shutter Settings