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uhaas2009 wrote:
.......
.........I didn’t use the correction in the camera
because two different results on both cameras.
........
That is NOT a reason to skip the corrections.
That is normal. Such errors are not from the
lenses but are the from the bodies, and so it
will vary from body to body. Even if you park
this lens and get a much more modern one,
corrections will likely be needed, becuz you
are correcting each body, not each lens. But
each body errs differently from lens to lens.
so you hafta correct EACH lens-plus-camera
combination that you intend to use.
It's in the nature of SLR AF mechanisms to
have such inconsistencies and inaccuracies.
So it's necessary to learn how to do it. And,
even with skilled adjustment, errors are not
banished ... merely reduced :-(
It has been this way since the first AF SLR
and has gotten better thru 30 years of AF,
but only 60% to 70% better, starting from
"rather sketchy" in 1987. Since most users
are now so dependent on AF, the industry
is moving beyond SLRs and the problem is
quickly going away.
.