In <NCBBKCNGEPAELMCFLLOGAEBFGMAA.wayneharridge@xxxxxxxxxxxxxxx>, on
07/10/02 at 10:09 AM,
"Wayne Harridge" <wayneharridge@xxxxxxxxxxxxxxx> said:
>Les wote:
>>
>> I've been thinking about trying some bandpass filtering to enhance
>> sharpness of architectural photographs. There are two obstacles to my
>> ambitions, however:
>What is the purpose of these bandpass filters ?
One essentially is using monochromatic light, in the middle of the
visual spectrum, thus eliminating the other wavelengths that excite
aberrations in the image projected onto the film. There is a slight
increase in sharpness and a slight increase in contrast. It's
interesting to explore and can add a "crispness" to images.
---------------------------------------------
les clark / edgewater, nj / usa
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