Does anyone know wheter CHDK supports manual focus on the Ixus 185?
According to how the port is configured, it should support subject distance override in all focus modes (AF, AF lock and MF). However, the
discussion in the porting thread is a bit ambiguous.
Note it probably won't work if the camera is in "AUTO" shooting modem, or if continuous AF is enabled in the Canon menu.
Since you have PTP set up, you can using
chdkptp. Using the GUI, with the camera connected and switch to rec mode:
=set_aflock(1)
=set_focus(100)
=set_focus(10000)
you should see the focus immediately after each set_focus. Use set_aflock(0) to leave aflock, then set_mf(1) for MF and repeat. set_mf(0) to turn off MF.
In auto focus mode (with neither set_aflock nor set_mf active) the focus only updates immediately before shooting, so you can test in chdkptp with the shoot command like:
shoot -sd=0.01
shoot -sd=10
and compare the photos
The menu (attachment) seems to indicate it does, but I don't know where the DISP button is.
Indeed, it doesn't have one, which means that shortcut will not be available. This is a general problem in CHDK where assumptions are made about which keys cameras have. However, you should still be able to enable "Override subj dist." in the "enhanced photo operations" menu. You can also toggle all enabled overrides overrides using the half press + down shortcut.
