Canon EOS-1Ds Software Instructions EOS DIGITAL SOLUTION DISK Ver.4 for Window - Page 81

Disables focus detection search driving by the lens drive, Disables the AF-assist beam from being

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Page 81 highlights

Specifying Camera Settings from Your Computer Personal Function Settings P.Fn-14 Disables focus detection (search driving) by the lens drive ● Normally, when you press the shutter button halfway and focus cannot be achieved, the lens is driven to search the correct focus. This lens driving operation can be turned off. ● When focus has been achieved once and refocusing fails, the subsequent lens driving operation can result in grossly inaccurate focus. This subsequent lens driving operation is turned off. P.Fn-14 is especially suited for super telephoto lenses. If autofocusing is attempted while the lens is way out of focus, the lens may stop operating. Focus manually until the subject outline becomes discernable, then autofocus. P.Fn-15 Disables the AF-assist beam from being emitted ● This disables the external Speedlite's built-in AF-assist beam. ● At a joint photo session, etc., this prevents the AF-assist beam's pattern projected on the subject from being photographed by other photographers. 4-15

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4-15
Specifying Camera Settings from
Your Computer
Personal Function Settings
P.Fn-14
P.Fn-15
Disables focus detection (search driving) by the lens drive
●
Normally, when you press the shutter button halfway and focus cannot be achieved, the
lens is driven to search the correct focus. This lens driving operation can be turned off.
●
When focus has been achieved once and refocusing fails, the subsequent lens driving
operation can result in grossly inaccurate focus. This subsequent lens driving operation is
turned off. P.Fn-14 is especially suited for super telephoto lenses.
If autofocusing is attempted while the lens is way out of focus, the lens may stop
operating. Focus manually until the subject outline becomes discernable, then
autofocus.
Disables the AF-assist beam from being emitted
●
This disables the external Speedlite’s built-in AF-assist beam.
●
At a joint photo session, etc., this prevents the AF-assist beam’s pattern projected on the
subject from being photographed by other photographers.