X-T2 problem with Focus Priority - pictures are taken even though there is no focus

[PiKa]

Camera is set to Focus Priority but picture is taken when there's no focus. X-T2 + 18-55, AF-S, focus removed from shutter button. According to https://fujifilm-x.com/af/en/af_guide/point02.html it should " wait until a focus is achieved to take a picture. "

Anyone else with such problem?

[Greybeard]

What is your AF+MF setting (under the AF menu)?

[Doug Pardee]

Focus Priority only applies while AF is actively running. Since you've removed AF from the shutter button, pressing the shutter button doesn't make it run. If you're using back-button focusing (AF-ON), it's only running while you're still pressing the button.

And, as Greybeard alludes to, if you have AF+MF turned on, the AF quits running as soon as it's done trying to focus, so Focus Priority is non-functional with AF+MF.

[PiKa]

11 hours ago, Greybeard said:

What is your AF+MF setting (under the AF menu)?

It's OFF. Changing it to ON does not change anything.

 

14 minutes ago, Doug Pardee said:

Focus Priority only applies while AF is actively running. Since you've removed AF from the shutter button, pressing the shutter button doesn't make it run. If you're using back-button focusing (AF-ON), it's only running while you're still pressing the button.

And, as Greybeard alludes to, if you have AF+MF turned on, the AF quits running as soon as it's done trying to focus, so Focus Priority is non-functional with AF+MF.

I see. Indeed, with Shutter AF OFF the Focus Priority does not work. With Shutter AF ON (the default) the Focus Priority works correctly (picture is not taken with no focus).

It's not documented but I suppose it's the intended behavior?

That's a bummer, I thought I could use it for "focus trap". 

 

Added: do you think it would be a problem if Focus Priority simply didn't take pictures if there's not focus, does not matter what are the other settings?

Edited December 12, 2018 by PiKa

[bergat]

I think it is different with X-t2. With X-T1 also if the subject is  out of focus , and you have setted priority to focus when you press the buttom , the  camera  always take the picture also if out focus

[MonGoose]

I have the same issue. It's a shame xt2 cannot properly trap focus. The priority feature is useless.