> > Anyone trying to argue otherwise (e.g. Will Robb) is either
> > ignoring one or more of these factors, or using the "personal opinion"
> > argument, to which there is no refute.
>
> Bill is using the "personal experience" argument. Conduct an experiment
> and evaluate the results. This is very different from the "personal
> opinion" argument. Granted, Bill is evaluating his experience
> subjectively and it is only based on his experience, but JCO made a
> blanket statement that "ALL people can focus long lenses easier than
> short lenses (at a given f-stop)." So the argument has turned into one
> or two people's experience that show otherwise and JCO's blanket
> statement which, without his own evaluation (he doesn't need to prove
> anything to us with experience), is just his opinion.
>
"Personal opinion" based on "personal experience." I'm sure that
some folks could use the same lenses Bill did and conclude the opposite.
I'm not one to decree absolutely that longer lenses are "easier" to focus.
The "ease" is a subjective thing based on many factors. All I'm saying is
that everythign else being equal, the physics of DOF on a longer lens
means it's more sensitive to adjustments. Thus if it's focused to the
same relative accuracy in the viewfinder, it will be objectively more in
focus.
I will not argue against what someone else subjectively thinks.
They're entitled to their own opinions. I will, however, point it out
when this opinion is extended to include things contrary to objective
facts.
-Cory
--
*************************************************************************
* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
*************************************************************************
--
PDML Pentax-Discuss Mail List
[email protected]
http://pdml.net/mailman/listinfo/pdml_pdml.net
