[rollei_list] Re: Quiet, Please!

  • From: Frank Dernie <Frank.Dernie@xxxxxxxxxxxxxx>
  • To: rollei_list@xxxxxxxxxxxxx
  • Date: Wed, 23 Sep 2009 05:38:29 +0100

Hi Peter,
Surely you mean the reverse?
Film flatness has always been a potential problem, particularly with larger formats, and the emulsion of film is effectively "thick" compared to the plane on which a lens must focus for a digital sensor. Digital therefore becomes much more sensitive to focus errors and lens shortcomings. Film is much more forgiving. In case you missed it the first time I posted the link, there is an interesting essay on the difficulty of realising the full potential of digital systems here:- 

http://www.josephholmes.com/news-medformatprecision.html

Frank

On 23 Sep, 2009, at 03:16, Peter K. wrote:


Film is a perfectly flat plane, but digital is really not.


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