RE: E-20/E-10 Users

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I've run into the same problem. The AF seems to work better if there is some
contrast within the AF area. 

-----Original Message-----
From: owner-photoforum@listserver.isc.rit.edu
[mailto:owner-photoforum@listserver.isc.rit.edu] On Behalf Of
elgenper@telia.com
Sent: Sunday, December 07, 2003 4:34 AM
To: List for Photo/Imaging Educators - Professionals - Students
Subject: Re: E-20/E-10 Users

Yeah, my E-10 did the same; so does my Canon D60.  I think part of the 
problems are common to most "consumer" DSLR´s.

1) The camera is made to a price, and the CCD is eating most of that 
price.  So the rest must be CHEAP; the AF module is taken from the 
company´s cheapest film body.  On that body, it was capable to focus a 
cheap consumer zoom on a full frame of print film just enough to make a 
decent drugstore print from it.  Now it has to focus on a much smaller 
CCD instead.  The DSLR is bought by other people than the "plastic 
crowd"; they put good lenses on them, shoot more demanding subjects, 
and want to print much bigger on their inkjets.  So they enlarge the 
small image far more, and the AF sensor is just not up to a task it was 
never designed for; a lot of the pictures are out of the tolerance 
interval.

2) Price again, in a way:  if you make an AF sensor that covers an area 
exactly the size of the AF markers on the focussing screen, it has to 
be very well aligned in assembly.  This takes too much time, so the 
sensors are made to cover far more, so the markers should fall inside 
the sensitivity area.  No problem for most pictures, but if you thry to 
cocus on a small flower among leaves of grass and place the AF marker 
on the flower only, chances are that some of the grass will be inside 
the real AF area and get locked on instead.

Solutions:  either buy a real pro DSLR or be prepared to focus manually 
a lot of the time.  The first alternative is out for most of us, so it 
has to be the second.  Sadly enough, my experience with the E-10 was 
that it was almost impossible to focus manually; that´s one of the 
reasons I "upgraded" to that D60.  It is a lot better, but far from 
perfect, because the screen is made for clarity, not for focussing.  
What I´m waiting for now is NOT higher MP count, it is a realistically 
priced DSLR with replaceable screens, and one with microprism circle 
among these.

Per


2003-12-07 kl. 03.12 skrev Bill Ellis:

> I'm using an Olympus E-20,but I think my question would apply to both 
> users.
> Do any of you have focusing problems ? I enlarge the image on the 
> monitor
> when I want to see how sharp it is and if I can reshoot what I want to 
> be
> better.  At times no matter what I seem to do some images just won't be
> sharp. I know you have to have the focusing rectangle in the center on 
> your
> point of focus and I realize you have very little depth of field in 
> front of
> where you are focusing. I'm just wondering if there is something I'm 
> not
> doing.
>
> Thanks for any help..comments,





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