Digital BW, The Print

I used to have an R4 Leica, and 2 summicron lenses 1 Leica Macro, and 1
elmarit.  Tests between my 90mm Elmarit and my friends 90mm Summicron
showed the opposite from what was expected. The Elmarit was sharper. I
had always thought the summicrons were the sharpest. In comparison to my
Canon lenses, There isn't enough difference in sharpness to talk about.
They are for all practical purposes equal. My Canon 50mm is sharper than
my Leica 50mm Macro was. Not enough to notice until you made corner and
edges tests in a 16x24 print. Then the Canon was noticeably better. Both
were still excellent. 

Both companies produce fantastic gear,  We also noticed that the M
lenses are sharper than the same focal lengths for the reflex cameras. 

Jerry



Austin Franklin wrote:
> 
> Hi Jerry,
> 
> I'd check with Erwin's web site for that info, and then with B&H or someone
> for prices.  I assume he is talking about Leitz lenses for the Leica R or M
> cameras.
> 
> Regards,
> 
> Austin
> 
> > -----Original Message-----
> > From: Jerry Olson [mailto:jerryolson@...]
> > Sent: Tuesday, January 29, 2002 12:30 PM
> > To: DigitalBlackandWhiteThePrint@yahoogroups.com
> > Subject: Re: [Digital BW] From the horses mouth.
> >
> >
> > Austin, what are some of these Really sharp lenses of which you speak?
> > Brands? Prices, What cameras do they fit?
> >
> > Thanks
> >
> > Jerry
> >
> >
> >
> >
> > Austin Franklin wrote:
> > >
> > > If you read the article, it says the following:
> > >
> > > "Kodak had suggested that a photographic lens needs to have a
> > resolution 3
> > > times as high as that of the film to fully exploit the
> > capabilities of the
> > > emulsion."  It's apparently not quite true, but never the less, a good
> > > starting point.
> > >
> > > So, even at 40 lp/mm, that's a lense of 120 lp/mm...  He also
> > says that the
> > > best photographic lenses from Leica can achieve 250 to 300
> > lp/mm...so as I
> > > said, there are lenses readily available that easily accommodate high
> > > resolution films, even if you take the 3x "rule of thumb" or not.
> > >
> > > Austin
> > >
> > > >
> > > > I said the real resolution, i.e. that achievable in a real camera
> > > > with the
> > > > medium of your choice, rather than the theoretical figures
> > > > obtained with an
> > > > MTF machine.
> > > >
> > > > http://www.imx.nl/photosite/technical/highres.html is quite a
> > > > good discussion
> > > > of the resolution issues.
> > > >
> > > > On Tuesday 29 Jan 2002 2:18 pm, Austin Franklin wrote:
> > > > > Derek,
> > > > >
> > > > > > ...because the real resolution of
> > > > > > 35mm lenses
> > > > > > simply doesn't match that high a figure.
> > > > >
> > > > > High end primes can go well over 100 lp/mm...  BTW, have you
> > > > seen gigabit
> > > > > film?  Obviously, there are lenses that can accommodate that film.
> > > > >
> > > > > Austin
> 
> 
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