Keith,
You're a more qualified engineer-guy than I am, but I don't see how it's totally mechanical. Don't these gizmos have some smarts (Artificial Intelligence kinda) that has to randomly make "decisions?
I know you can put a Canon Drebel on a tripod and it will at time change what 1, 2 or 3 of the the 3 focus points it will choose to use with identical subject/lighting. (I set it to always just use the center point so I don't have to deal with the cameras "opinion.")
These auto focus cameras have to guess how far away the subject is. Is that such a cut and dried prcess in the real world? Suppose my camera randomly misguesses how far away the subject is? Too bad that's not in the EXIF data . .
You're a more qualified engineer-guy than I am, but I don't see how it's totally mechanical. Don't these gizmos have some smarts (Artificial Intelligence kinda) that has to randomly make "decisions?
I know you can put a Canon Drebel on a tripod and it will at time change what 1, 2 or 3 of the the 3 focus points it will choose to use with identical subject/lighting. (I set it to always just use the center point so I don't have to deal with the cameras "opinion.")
These auto focus cameras have to guess how far away the subject is. Is that such a cut and dried prcess in the real world? Suppose my camera randomly misguesses how far away the subject is? Too bad that's not in the EXIF data . .
--Being mainly an electronic device, you would think it would work orThere are too many people like Keith who say that their models have
nothing wrong with them - yet he doesn't tamper with the settings
to get a clear picture. Mine is mostly okay - but when it isn't
what is it doing different?
not. I cannot see how focusing could be intermittent (although
some obviously are). Even a faulty focus mechanism should not
cause an intermittent problem because the camera decides on focus
by looking at the picture. A focus mechanism that moves just as
the picture is taken would be one possibility (e.g. something
mechanically loose).
If you do try taking loads of shots with a tripod, try alternating
with two subjects at different distances.
What we really need is someone who doesn't have a problem to meet
up with someone who does and see if the cameras really are the
problem.
(sharp) Keith
- Bob Redrock