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Re: [OM] Going autofocus (Was 300mm 2.8 and things to come!!)

Subject: Re: [OM] Going autofocus (Was 300mm 2.8 and things to come!!)
From: "C.H.Ling" <pling@xxxxxxxxxxxxx>
Date: Sun, 26 Mar 2000 14:22:08 +0800
-----Original Message-----
From: atk@xxxxxxxxxx <atk@xxxxxxxxxx>


>Well -- a typical monitor resolution is 72dpi (or 72 lines per inch)
of course
>the quality of the tube (those using lcd ignore this) has a big
impact on
>the accuracy of the individual dots -- but let us assume you get 72
quality
>dots per inch -- which is only about 29lpm which is not a very good
lens.
>
>Did i do this right ?
>


No, it depends on what is your picture size, if your picture is
1024x768 (very large for a web image). The dot per mm of the image is
1024/35mm=29.26 and line per mm is 14.6, a very bad lens.

C.H.Ling


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