On Thu, 23 Jan 2003 23:12:30 -0330, "John Brown" <johnnyB102@freeserve.net> wrote:

>I've just had some slides copied for a portfolio I'm sending off for an

>internship position.

>

>Some of the copies are just not as sharp as the originals. The originals

>were shot on Provia 100 and Velvia. The guy at the store told me he used

>Kodak slide copying film -- should this be able to capture every subtle fine

>detail of the fine grained Fuji films or am I just expecting too much.

>

>When I compare the original and copy, I just feel that the copy doesn't look

>sharp enough. I am concerned because some one reviewing the portfolio may

>think my original image wasn't in focus when I took the photograph.

>

>The store said that they will attempt at redoing the ones I am not happy

>with, which is good, but are they going to think I'm being too anal about

>this, as the details I'm judging the sharpness by are very fine.

If you are critical about sharpness, no 35mm slide dupe will

be as sharp as the original (assuming the original is VERY

sharp). Viewed under a good 10X magnifier, the dupe will

always be somewhat softer than the original, though possibly

"good enough" for most uses... To closely approach the

original sharpness in the copy, the duping materials and

optics would need to have many times the resolution of the

original, unlikely to happen in practice...