Canon Camera, Hackers Manual

Page: 218 / 257

7.5 Remote control
209
If the camera is set to manual focusing with ALT > MENU > Brackt/Over-
ride > Focus mode to Manual , the above shortcuts are interpreted differ-
ently
1
:
f ALT > LEFT : Focuses nearer
f
ALT > RIGHT : Focuses farther
f ALT > UP : Infinity
f
ALT > DOWN : Hyperfocal distance
When focusing with these keys, observe the SDM header line to see how
the focal distance changes. The changes become effective immediately, and
you can observe how the area of sharpness changes on the display. However,
the dialed-in focal distance is only used in the next shot if the
Overrides have
been enabled (see above). Otherwise, the camera will refocus.
In Play mode, the following key shortcuts are possible:
f
ALT > FUNC/SET: Switches Remote Browsing on/off with a short click on
FUNC/SET . A longer press switches the USB Upload function on/off.
f
ALT > LEFT : Browses OSD backwards.
f
ALT > RIGHT : Browses OSD forwards.
f
Half-press shutter button : Shows red/cyan overlay of left and right
image. On the S2 IS, S3 IS, S5 IS, and A550, use the FUNC/SET button
instead (section 7.6).
There are a few more shortcuts listed in file SHORTCUT.TXT that apply to
specific situations. Don’t forget to press the ALT button again after using a
command sequence starting with ALT . Otherwise, you will still be in <Alt>
mode and your next shutter button press will probably start a script in-
stead of take a picture.
7.5 Remote control
In contrast to the CHDK, the SDM switches on the USB remote control by
default. All you need to do is plug in the remote control unit. Two different
remote systems are supported:
f The Ricoh CA1 remote control and compatible models. The switch of
this unit works in three stages: (1) When the button is half-pressed, the
camera focuses. (2) When the button is fully pressed, the camera mea-
sures the exposure. The blue LED indicator is lit when the camera is
1 Switching between these two modes requires at least a half-press of the
shutter button after the focus mode is changed.