Currently Being ModeratedMay 13, 2012 4:05 PM (in response to karbru)
The info Aperture is using is being read from the meta-data from the camera. It is accurate within the matrix of the sensor, and it not based upon the final composition of the photo, in my opinion. I would expect nothing else.
Currently Being ModeratedMay 13, 2012 5:04 PM (in response to Ernie Stamper)
Ernie is right on the matrix. I have a canon mark III and it is off in focusing. its a tad bit closer than the sensor. My camera however is adjustable but not all are. Cheers
Currently Being ModeratedMay 13, 2012 5:40 PM (in response to karbru)
This needs, I think, a little more clarification. The "focus point" to the camera, is which of the focus points was used. _These have a fixed relationship to the sensor_, and thus a fixed position in relation to the flat rectangular array of data that we call a photograph.
Karen -- you didn't actually focus on the eye. You focused on the data that fell under one of the focus points of your camera. Which of the focus points is used is recorded in the metadata and displayed by Aperture. The camera -- and, perforce, Aperture -- does not "know" whether your daughter or the camera moved or was moved between the time focus was made and the time the exposure was made. All Aperture is telling you is which focus point was used. If your camera or subject moves, what is in focus in your photo will not correspond to the location of the focus point used.
This has _nothing_ to do with front- and back-focusing, which is what dbmoore refers to.
Currently Being ModeratedMay 13, 2012 7:01 PM (in response to Kirby Krieger)
That is what I thought, but I was not sure. Thanks for the info .
Currently Being ModeratedMay 13, 2012 7:03 PM (in response to dbmoore)
I am not sure what you mean by adjustable sensor. I am able to change the focus points, which I do at times. I find that manual focus works best overall. Thanks for your help.