http://www.idahoairships.com/2007/09/02/the-dawes-limit-theoretical-limits-of-lens-resolution/ Aerial & Technical Photography, Photoshop & Flash Blog. Thu, 27 Oct 2011 15:51:33 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://www.idahoairships.com/2007/09/02/the-dawes-limit-theoretical-limits-of-lens-resolution/comment-page-1/#comment-1011 More on DPI, PPI and LPI for genealogists | Practical Technology Thu, 02 Dec 2010 20:04:45 +0000 http://www.idahoairships.com/?p=134#comment-1011 [...] Limit is the smallest resolvable angle of an optical system. In technical terms, to calculate the Dawes Limit of a lens system, divide 4.56 (seconds of arc) by the Aperture in inches, or 115.8 (seconds of arc) [...] [...] Limit is the smallest resolvable angle of an optical system. In technical terms, to calculate the Dawes Limit of a lens system, divide 4.56 (seconds of arc) by the Aperture in inches, or 115.8 (seconds of arc) [...]

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