I think you misunderstand. It it not autofocus lock. It is simply the
autofocus enable button. If you press the button the lens gets focused.
Release the button and the lens stops focusing... and it is autofocus
locked by virtue of the fact that it can't move. It is the reverse of
what you say it is. Try it.
Chuck Norcutt
On 8/2/2012 8:58 PM, Joel Wilcox wrote:
> Yes, so far so good. But AFL does not persist beyond one shot unless
> you keep you thumb on the button. Olympus cameras since the E-1 (or
> OM-4 if you prefer) have a memo capability.
>
> Joel W.
>
> On Thu, Aug 2, 2012, at 07:01 PM, Chuck Norcutt wrote:
>> The 5D is less sophisticated on focus control? Eh, what? See page 152
>> of the Canon 5D user's manual and the discussion of custom function 4.
>> If fn 4 is set to 1 instead of the default value of 0 the AEL button on
>> the back of the camera (marked with "*") becomes the focus control and
>> the AEL function is then only activated by a half press of the shutter
>> button. Pressing the "*" button with your right thumb causes the camera
>> to focus. It will never be refocused until you press it again. It's
>> been set that way on my camera for about 6 years now.
>
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