Canon CHDK Quick Start Manual page 32

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Adaptor Lens Scale, 100=1x [0 – 1000]
Adjusts the zoom value above by a multiplier, which is based on the converter lens that is
installed on the camera. For a 0.7x wide converter use 70. For a 1.75x tele converter use
175.
Show 'real' Aperture
Av in Miscellaneous Values. This is the actual aperture setting after any override aperture
adjustments have been applied.
Show 'real' ISO
I-R in Miscellaneous Values. Displays the actual ISO value after overrides or bracketing have
been applied.
Show 'market' ISO
I-M in Miscellaneous Values. Displays Canon's ISO value, which is not always the same as
the actual ISO value.
• Show ISO only in Autoiso mode
Display the ISO value only when the camera is in Auto ISO mode.
Show Set Exposure Ev (Tv+Av)
Evs in Miscellaneous Values.
Show camera exposure value based on the values of shutter speed and aperture.
Show Measured Ev (Bv+Sv)
(brightness value + scene sensitivity set in a camera)
Show Set Bv (Brightness Value)
Bvs in Miscellaneous Values.
Internal-brightness scenes through recalculation of the parameters established in the camera. Just
Av-Sv + Tv.
Show Measured Bv
Displays the measured brightness value, as written in the Exif data.
Show Overexp. Value (No Flash!)
Indicates a calculated overexposure value. Av-Bv-Sv + Tv
Show Canon overexp. Value
Indicates the overexposure value calculated by the camera.
Show Scene luminance (cd/m2)
B in Miscellaneous Values.
Run average in standard illumination scenes candelas per square meter... calculated from a ratio
to Bv = 12.5.
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