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Re: [OM] What MF can mean

Subject: Re: [OM] What MF can mean
From: Paul Wallich <pw@xxxxxxxxx>
Date: Thu, 28 Mar 2002 16:19:02 -0500
At 8:14 AM +1200 3/29/02, Brian Swale wrote:


Suppose, for arguments sake, you decide that at least the detail of
equivalent to 15 line-pairs/mm are required on the print. That fewer will not
yield an acceptable impression of sharpness.

On the basis of the illustrative calculations above, the following would be the
maximum long-side prints you could make.

35 mm, 1575/15 =  105 mm
6x9cm, 4050/15 = 269mm
4x5 inches, 5625/15 =  375mm
6 x 17cm, 7650/15 =  510mm.

Just by the way, 15 lp/mm is about five times the resolution used for gravure printing of those big coffee-table books (the few that still are gravure-printed). So in actuality you may be able to go a bit bigger than the long sides calculated above.

paul

--
Paul Wallich                                            pw@xxxxxxxxx

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