Re: Pop Photo Resolution Lines Per ?

[karl shah-jenner <shahjen@xxxxxxxxxxxx>]

----- Original Message ----- 
From: <editor@xxxxxxxxxxxxxx>
To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@xxxxxxxxxxxxxxxxxx>
Sent: Tuesday, May 13, 2008 7:42 AM
Subject: Re: Pop Photo Resolution Lines Per ?


: But all MTF tests are done using line PAIRS per millimeter. Thus you would convert your x  lines per mm into x/2 lp/mm (for comparison purposes)
: 
: Further, your math is wrong. 2100/25.4 = 82 lines, which translates into 41 lp/mm. Keep in mind that these tests are at full contrast (i.e. Black lines on white background) so comparison to normal 50% MTF is difficult.
: 
: Michael 
: Sent from my Verizon Wireless BlackBerry



on top of that digital resolution along the x/y axis differs from that on an angle..

so resolution drops further, unlike film resolving power

an example (and this is about as 'actual' an example as there could be!)


resolution= pretty good []=pixel

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resolution, not so good (jaggies)

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karl