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easycass

Continuous AF with Clutched Lenses

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easycass

Greetings...

As we know, it possible to set up an x-series camera for back-button focusing whereby Continuous AF is activated by holding a back AF button and MF can be adjusted by releasing the AF button and turning focus ring. With the clutched lenses, is it possible to set this up so that the clutch-ring does not need to be moved backwards and forwards to change between AF to MF mode, and instead be left engaged so as to provide the same instant manual adjustment while maintaining the ability to do Continuous AF on a button press?

Many thanks,
Cass.

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artuk
9 hours ago, veejaycee said:

Short answer - no. You are stuck with it.

 

Beat me to it - no.  On lenses with a push-pull AF-MF ring, it's a mechanical setting on the lens and isn't controlled by the body in any way.

As an aside, Minolta introduced a featured called "direct manual focus" to the SLRs in the late 1990s, which is still carried forward in some Sony cameras now - the camera will AF in the normal way, and then the clutch is automatically released so as to allow manual focus tuning.  However, this caused issues with some cheap lenses with focus motors that required a hard switch on the lens to select MF or AF - a similar issue to that with the lens clutch on the Fuji lenses you describe.  Most systems end up with these small issues, though with newer systems you would hope they are designed out as the designers start with a grand plan.  Alas, it's obvious that even new system evolve over time, and new features added don't always work well with older features.  Oh well.

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easycass
6 hours ago, artuk said:

Alas, it's obvious that even new system evolve over time, and new features added don't always work well with older features.  Oh well.

Thank you Veejaycee and Artuk for your replies.

Yes, in the late 90's a few manufacturers seem to try out the clutch mechanism to give a way of disconnecting the outer ring from the internal mechanism during autofocus. Of course, at the time, it was a good idea, until the bigger players gave full-time manual and autofocus using internal friction-clutches, which avoided having to pull back or switch anything. The action of pulling back a clutch instead of just turning the focus ring certainly 'adds' to the experience... ;).

I have just read that AFS is now available with the Fuji's clutch pulled back into the manual position, but, not quite a fluid experience either so I have heard...

Anyway, not a huge issue, but good to know. Thank you again.

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