This just in from the Silly Question Dept.....
I am trying to use my X100 with rear AF only. This is my standard working m.o. with dslrs. I would like the AFL-AEL button to be an AF activate switch, ie. I see a subject, place the AF rectangle on my focus point, hit the button, and focus is locked at that distance until I hit the button again. I am using the optical VF exclusively, btw.
I went through the manual and have the following settings:
AE/AF-LOCK MODE = ON/OFF SWITCH
AE/AF-LOCK BUTTON = AF LOCK ONLY
Here's my question: When is focus actually locked? My understanding is, when I first press the button, the AF rectangle turns green, focus is locked. I then shoot the picture.
Evidently this is incorrect. I went out yesterday and shot approx 75 images this way. Sunny day, ISO 200, f8, aperture preferred. Many of the shots are out of focus. So I ran a test. Apparently if I press the AFL-AEL button, so that the AF rectangle turns green, and then take a picture focus is way off. If I do the same so that the rectangle turns green and then press it again so that the rectangle turns white - focus is spot on.
Am I the last person in the world to this party? I've read the manual and cannot find any reference to visual cues when focus is locked. Am I correct that my procedure requires a double press of the AEL-AFL button?