Note that HemiView does not accept the native Canon RAW image file
format, but you can convert it to a bitmap on your PC.
Camera Settings
The optimum setting depends on the nature of the picture.
We recommend the following Shooting Menu settings
as a starting point
for new users (see Canon 50D Manual, Image Settings p. 59 onwards).
Setting
Canon 50D
User Manual
Sigma Lens
Manual *see Note 1
Camera mode
Manual
p. 98
Menu: Quality
p. 60
AEB
0
p. 102
WB SHIFT/BKT
K 5200 *see Note 2
p. 71
Metering Centre-weighted
Average Metering
p. 100
Picture Style
Standard
p. 65
Histogram Brightness p.
134
*Note 1: Manually focus the lens to infinity, unless you are in a very low
canopy.
*Note 2: The presumed colour temperature of daylight coming through
gaps in the canopy.
Saving Settings
You may fine tune your settings and save the configuration on the camera,
using the camera controls.
You can also configure it from your PC using the Canon software.
See also the Canon 50D User Manual and EOS software manual
Exposure
Getting the exposure right can have a significant effect on how easy it is to
classify an image in HemiView, and on the accuracy results.
Aim to have areas of sky at the top end of the brightness range, and areas
of canopy at the lower end. Check this on your image by looking at the
brightness histograms.
On the Camera, select
to play back the image onto the LCD monitor
and toggle the
INFO
button to display image information, including a
histogram. (It is easier to inspect histograms on your PC using the Canon
EOS software)
SLM8 User Manual v 1
Taking Hemiphotos
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