Spot Metering in Manual Mode - Affected by Auto Focus?

Started Jul 29, 2012 | Discussions thread
Veteran MemberPosts: 8,373
Re: Spot Metering in Manual Mode - Affected by Auto Focus?
In reply to Doug Pardee, Jul 30, 2012

Doug Pardee wrote:

Graystar wrote:

By default, Canon cameras will lock exposure on the half-press

But the OP isn't using default settings. In the specified configuration, auto-exposure is only locked by pressing the AE-Lock button ( * ).

I don't have a Canon, so my understanding is based on the manual and other forum posts, but my understanding was that in manual mode the AE-Lock function is disabled. That's according to the table in the back of the manual.

According to the manual, C.Fn-10=1 is used to put focus on the AE-Lock button. The manual says that C.Fn-10=0 is AF/AE Lock, which is the default. The OP hasn't indicated that C.Fn-10 has been changed.

My understanding is that when you half-press the shutter in manual mode, that the exposure indicator will stop indicating changes to exposure when C.Fn-10=0 or 1. If that's not the case then I'll gladly stand corrected.


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