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Digital BW, The Print

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Re: [Digital BW] Re: Sigma lenses & Canon Digital cameras

2005-04-28 by Carl Schofield

Paul,

Have you tried using your 50 or 85 on the Rebel XT to shoot a matrix of 
overlapping shots for stitching?  You can get quite a gain in effective 
resolution for making large prints.

Carl

On Apr 27, 2005, at 8:30 PM, Paul Roark wrote:

>
>
> Clayton,
>
>
>> ... my question to Paul was not
>> theoretical.  I'm asking him what has been his practical experience so
>> far.
>
>
> I did some shooting with the Rebel XT, comparing the 18 - 55mm zoom 
> that
> comes with it to my old 50mm f1.8 standard Canon EF (cheap but very 
> good)
> lens.  In the lab, the resolution tests made it appear the zoom was 
> about as
> good as the 50mm.  In actual photos today, the 50mm looked 
> significantly
> better.  The 50mm was very good at f4 and excellent from f5.6 on.  The 
> zoom
> could only match the 50mm at the center at f11.
>
> The real problem with the zoom was at the edges, especially in the dark
> greenery.  The best the zoom could do at the edges was not as good as 
> the
> 50mm at f2.8. I'm not sure why it looked so much worse in the field 
> than
> lab.  I suspect higher flare contributed to wiped out the shadow 
> details.
>
> So, I've made a full circle on the lenses.  I'm back to wishing my 24mm
> Sigma worked.  I may buy a 24 Canon, and use it and my 50mm.  It 
> doesn't
> look like using the cheap zoom is going to be a fair test of what an 8 
> mp
> camera can do.  I would not consider a cheap zoom for my film use, so 
> why
> should digital be any different?  (I'm not totally anti zoom.  My 50 - 
> 200 L
> and Fuji Zi zooms are outstanding.  I'm not, however, ready to drop 
> $800 for
> the 10 - 22 until I'm more convinced this digital approach is going to
> satisfy me.)
>
> Paul
> www.PaulRoark.com
>

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