[APML] Question about Loss in resolution

["Michael Barlow" <mikeba@rochester.rr.com>]

    I have a very nice 4x6 print of the Moon I took this summer, It was so
nice that I had it blown up to 10x15.  I knew there would be some loss in
resolution but I had no idea how much so I figured this would give me an
idea of that loss for other objects should I do this again.

    I have my first slide film in the camera now and I'm waiting on a good
night to take some shots of Saturn and M42.  I don't expect to get any shots
worth the money to have them developed because of inexperience in manual
guiding, but should I happen to get that perfect shot of something....

    As mentioned above I now see how much loss of data there is as print
pictures are blown up in size and I can only assume the same loss ratio with
slides being projected on the wall.  Is this correct or is the loss ratio
different with projected slides?  Example: The projected image being 10x15
on the screen.  Or is there something about slides and/or projecting them
that helps lower the resolution loss ratio?
Michael A. Barlow

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