----- Original Message -----
From: "Joel Wilcox" <jfwilcox@xxxxxxxxxxx>
> On Mon, Feb 6, 2012, at 11:38 PM, C.H.Ling wrote:
>> All DSLR camera manufacturers have problem to ensure accurate focus with
>> different lenses, in the film age no one notice about it but the problem
>> can't hide when pixel count increases in digital age. That's why we have
>> focus calibration on the latest DSLRs. Even so I don't think it works in
>> all
>> condition, the Tamron 70-300 I had was working fine with my 5D II at day
>> time but focus shift with tungsten at the short end.
>
> That is very weird. Photons are photons, aren't they?
>
Who knows? I had problem with E-3's AF, both my 11-22 and 50-200 have focus
shift at the wide end, I can't explain either. They were repeatly tested for
a hundred times.
>> I think mirrorless camera is the way to go, the focus of my E-PL1 is
>> extremely accurate even under very poor light.
>
> Can you rule out all other factors affecting IQ with your DSLRs in low
> light (camera shake, high ISO, etc.)?
>
No, because the images were clearly front focused.
C.H.Ling
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|