15
Focus can also be controlled automatically using the other four buttons. The
++
will change the focus to further away in
large steps, the
+
will do the same in the smallest possible increments. The
--
, and
–
buttons do the same but move the
focus closer to the camera.
6.6 Exposure Control
Exposure is controlled through the
Exposure Control Panel
on the main screen. The
Exposure Control Panel
is shown
below:
Exposure time can be set by moving the slider on the panel or by entering an exposure time in the edit box. Exposure
times are entered in 1/sec units, the screen above shows an exposure time of 1/5.26 seconds. Exposure times greater
than 1 second can be selected using the slider or entered in the edit box. When entered in the edit box the time must be
specified with a trailing lower case 's' (for example entering 2s in the edit box will select a 2-second exposure time.)
Pressing the
Auto Exposure
button can enable auto exposure. When auto exposure is enabled the camera will
automatically attempt to find the best exposure for each image capture. The Auto Exposure algorithm only looks at the
center 128x128 pixels of the image, so it is possible that while the exposure of the center of the scene will be optimum,
the overall image exposure will not. In this case it is best to use the result provide by the Auto Exposure as a starting
point and then manually adjust the exposure for best results.
Auto Exposure will only work for exposure times between 1/1000 second and 1/3 second. Also, Auto Exposure will not
operate when strobe mode is enabled.
Pressing the
Strobe
button on the
Exposure Control Panel
enables strobe mode. The
Strobe Control Panel
will
replace the
Exposure Control Panel
when the strobe is enabled. The
Strobe Control Panel
is shown below:
The strobe power can be adjusted using the slider at the bottom of the panel. The strobe power can be adjusted to values
between 0 and 100%
Pressing the
Strobe
button again will return to non-strobe mode and the
Exposure Control Panel
will be displayed
again.
