Terry Danks wrote:
>
> I recently acquired this lens, used but in apparently
> pristine condition. It seems
> unlikely to be damaged.
>
> I notice that I can not manually focus it at all unless the
> the EOS3 is both turned on and the shutter release
> button is half depressed.
> This is the case regardless of whether the lens switch is in
> the AF or the MF
> position.
>
> While the lens performs just fine after depressing the
> shutter release, in this
> respect it is quite different than my other two L lenses,
> the EF300/2.8l IS and the
> EF180/3.5L. Those I can focus manually without even turning
> the EOS3 on.
>
> Anyone know anything about this?
The 85 1.2, 50 1.0 and non-IS teles have electronic MF where you need to
push the shutter halfway to MF. All others have the other.
Ken
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