Re: Sharpness in Tiff Scans

Tiff vs. JPEG has nothing to do with resolution (number of pixels). NOTHING. Nor, necessarily, with sharpness as long as you don't get carried away in the degree of compression in the JPEG format. The compression in JPEG does NOT reduce the number of pixels.


Chuck Tribolet wrote:
Which Coolscan? What scan options?

I agree, the TIFs should be better, four times more pixels, and no lossy
compression.



"1Scan" <jeff.underwood@xxxxxxxxx> wrote in message news:d016b8ef-6d0d-42c8-96fa-00fe92c00576@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I have done a number of scans of 35mm and m/f frames, using a Nikon
Coolscan and an Epson 4990. On the Nikon I've used their scanning
software, on the Epson SilverFast.

Each image has been scanned twice. First 2000 dpi jpg; second 4000 dpi
tiff. Apart from that all other settings were the same.

I am puzzled because in every case on enlargement the tiffs look
markedly inferior to the jpgs which are sharper. I had expected the
opposite to be the case.

Can anyone throw light on why this might be, and more importantly
suggest a solution? All suggestions gratefully received.

Jeff Underwood


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