AF Button question K10D

[ukbluetooth]

On my K10D:

In custom setting menu I have set AF Button Function to option 2 i.e. Cancel AF.
(AF by Shutter release button is disabled when AF button is pressed)

My understanding of this is that when I press this button it has the same effect as turning the front focus mode select button to MF.

Indeed when I press the AF button the letters MF appear in the viewfinder BUT the lens focus ring is still in autofocus mode i.e. it cannot be freely moved.

Is there something wrong or am I missing the plot somewhere?

Thanks in advance for any advice.

[Parallax]

Originally Posted by ukbluetooth

On my K10D:

In custom setting menu I have set AF Button Function to option 2 i.e. Cancel AF.
(AF by Shutter release button is disabled when AF button is pressed)

My understanding of this is that when I press this button it has the same effect as turning the front focus mode select button to MF.

Indeed when I press the AF button the letters MF appear in the viewfinder BUT the lens focus ring is still in autofocus mode i.e. it cannot be freely moved.

Is there something wrong or am I missing the plot somewhere?

Thanks in advance for any advice.

No, it doesn't do the same thing as changing the focus method. The camera, by default, will not trip the shutter if you are in autofocus mode and it is not focused. Setting the button to option 2 allows you to override that and expose a shot even if not focused on something.

[ukbluetooth]

OK - Thanks. It would have been convenient

Guess I need some quick shift focus glass

[innershell]

Originally Posted by Parallax

No, it doesn't do the same thing as changing the focus method. The camera, by default, will not trip the shutter if you are in autofocus mode and it is not focused. Setting the button to option 2 allows you to override that and expose a shot even if not focused on something.

Oh really? Now that is something I wish I knew. Much easier than switching it to manual and pressing the button anyway.