Digital BW, The Print

Steve,

No, I have not used Imatest.  If it really can produce MTF results, that
would be interesting.

I have used traditional line-pairs-per-mm charts for years.  That in
combination with some other targets has produced very useable results for
me.  On the other hand, my traditional approach may not be very good at
evaluating differing responses to high-flare targets, and that may be what
my real-world shooting is showing there to be.  Of course, I had assumed
that I'd use auto bracketing for serious shooting, and it's way too early to
evaluate how I'll feel after working up a real shots in B&W. 

Paul
www.PaulRoark.com 



> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Steve
> Kale
> Sent: Thursday, April 28, 2005 7:48 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] Re: Sigma lenses & Canon Digital cameras
> 
> Paul
> 
> Have you ever used Imatest?
> 
> http://www.imatest.com/
> 
> It all seems quite techie and some work but then arguably produces a
> quantifiable result...I note that the cost isn't too high (PC only I'm
> afraid) and you can demo it up to 20 measurements.
> 
> Steve
> 
> 
> > From: Paul Roark <paul.roark@...>
> 
> >
> > Alan,
> >
> >> For what it's worth, I just bought the canon 10-22 EFS lens using it on
> my
> >> Canon 20D ,primarily for architectural work.Although I've done no
> >> resolution chart tests, so far, I'm quite pleased with prints using
> the
> >> 1760 at 16x24 print size.
> >
> > Do you by chance have the 24mm EF for comparison?
> >
> > Paul
> > www.PaulRoark.com
> >
> 
> 
> 
> 
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