Early adopters of the Canyon 20D had lots of complaints about focusing
errors. It's one of the reasons I didn't buy one right away and then
the 5D became available in the interim. But that faded away for reasons
unknown to me and I'm not aware of any complaints of focusing errors in
the Canyon line again until the recent flap over the flagship 1Ds Mark III.
I found your comment interesting about the E-3 having a sensitivity
control for the center focusing point. When I was looking at the
battery images from the complaints list on the 4/3 site posted by Johnny
<http://www.fourthirdsphoto.com/vbb/showthread.php?t=20049>
I was much bothered by the fact that the comparison image from the E-510
was not of the same setup and, furthermore, the focusing target is very
dark and very low contrast but surrounded by much better targets for a
wide field focusing point to lock in on.
There may be lots of other good points I haven't bothered to follow but
I was suspicious of user error on this test and your comments that angle
of view sensitivity is adjustable only makes me more so. I might also
help explain some of the complaints the focusing is not consistent
(maybe camera not precisely aimed from shot to shot) unless those
complaints involved cameras on a tripod.
Chuck Norcutt
Garth Wood wrote:
> Johnny Johnson wrote:
>> It seems that some number of people on the 4/3s forum are finding
>> that they get more reliable auto focus with their E-510s than they do
>> with their E-3s.
>
> Yeah, I've been reading a few threads like this on dpreview as well.
>
> I went back and checked some visual targets I'd taken pictures of with
> the new E-3 for testing purposes, and in my case at least, focus appears
> to be bang-on with the new 12-60mm. The one problem with this lens is
> that the manual focus collar is where you normally want to "park" your
> left hand, and it's quite sensitive, so that if you're not careful,
> after you focus you can slightly de-focus while taking the shot. But
> I'd noticed this tendency right away and I (mostly) make sure I'm not
> accidentally dragging this ring almost imperceptibly.
>
> There are more formal tests I can do with the E-3, and I also suspect
> that part of the problem is that you need to turn off all the other
> focus points as well as restrict the centre focus point to its narrowest
> angle of acceptance (setting AF Sensitivity to "Small") in order to get
> the most accurate focus.
>
> Of course, I'm sure it's possible that some people got "lemons"
> nevertheless. Pretty much every shooter I know has such a horror story,
> either from days of yore or from the digi revolution -- my buddy Royce
> has some *very* choice things to say about some of his recent Canon
> acquisitions, for example. Seems like us consumers are a finicky lot. ;-)
>
>
> Garth
>
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