Canon CHDK User Manual
Page 12
• Value factor (mm)
[Off, 1, 10, 100, 1000]
FACTOR
in the
OVERRIDES
display in the OSD. The Value factor is used to enable the
“Override Subj. Dist Valu” (OSDV), and also to quickly set the focus distance. When updating
the “
Override Subj. Dist. Valu
” with the left/right buttons, the value will be changed by the
amount set in the “
Value factor
.” So “1” changes the OSDV by 1 mm, “10” changes by 10 mm,
and so forth. In this way the OSDV can be updated faster than trying to change the override from
1 to 450 mm by pressing the rocker 449 times.
For cameras without Manual Focus, (
IXUS /SD
series, and some A series) SD Overrides can be
used to manage focusing, either by entering values in this menu, or by using shortcut keys.
Enter a choice of unit value, either 1, 10, 100, or 1000, this will change the Subj. Dist. Value by
the unit value you entered, ie: if the Value factor is 10, and the Subj. Dist. is 10 then the focus
will be 10 x 10 = 100 mm from the lens.
These Manual Focus adjustments can also be achieved with shortcut keys. In
<ALT>
mode,
using the Left/Right keys to adjust the Value Factor and the Zoom lever to adjust the Subject
Distance, (or on cameras without a zoom lever use the Display (
DISP.
) button) Infinity is
immediately selected by pressing the Up key, and for Hyperfocal adjustment based on current F-
stop and zoom focal length, press the Down key. The subject distance values are displayed as
part of OVERRIDES on the OSD. Remember to exit
<ALT>
mode to shoot pictures with these
adjustments applied. Also remember to uncheck "clear overrides @ start" setting if you want to
continue with the current settings.
Override ISO value
[0 – {ISO max for camera}]
ISO:..
in the
OVERRIDES
display in the OSD. This feature allows you to override the camera’s
ISO setting. Select the desired ISO setting and the camera will use that setting in all auto and
manual modes.
• Value factor
[Off, 1, 10, 100]
The factor is used to enable the ISO override, and to set a multiplier against the “Override ISO
value” set above. So if you want to use an ISO of 1200, you would set the “Override ISO value”
to 12, and the “Value factor” to 100. This arrangement exists to speed the setting of a custom
ISO.
Note: Although CHDK may show a higher or lower setting, minimum and maximum ISO
overrides will mainly be determined by the camera hardware limits, CHDK enables “fine
tuning” of ISO settings, See: Custom Auto ISO on pages 12, 13.
See:-
Also:-
,
27, and 28 for “Show State Displays” of overrides in the OSD.
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