On 23 Nov 2003, at 17:09, Stefanie Kappel wrote:
if you always scan in at the max.The 1gig file is at 16bit so in 8bit it would be half that but yes I do put in 300dpi and the print size I want and let the resampling happen. In the past I have just changed the image size and left the dpi alone and in truth I couldn't see any difference. For me the only tangible difference was the time the file took to get to the printer (on my desktop, not the bureaux down the road) :-) My work often has a fair bit of retouching to be done and I only want to do it once hence my method of scanning at max quality. If I was working in a graphics environment, say a magazine, I would scan for the specific output because of hogging system resources and its once use nature and to avoid incurring the wrath of ones boss.
optical resolution than you obviously don't see any problem with
downsampling later? Is there no image quality difference if I then have to
downsample my nearly 1GB file to let's say a A4 print at 300dpi? I know I am
picky here but I really would like to know whether John's approach would be
the better one- to always scan at the resolution you finally require- and
yes that would mean you would have to scan each slide at various resolutions
according to your output requirements. Also: when you downsample- do you
just simply but the new resolution in at 300dpi or do you let's say put the
final image size of 8x10 inches in (in resizing) and if it gives you a new
resolution of 412 dpi (just as an example) leave it there or resample then
to 300dpi. In other words: do I really have to put 300 dpi in (resizing
first and then resampling) or can I just leave it at ~4xx? I am trying to
find a way of scanning at the highest optical resolution (so that I don't
have to do multiple scans) and still don't have to resample my images
I think that's where the specific output method comes from but it makes no sense in my workflow. For the same reasons, when I process a RAW file in Photoshop I always convert to the largest available image size in the RAW dialogue box because I've been led to believe that this is the best way to upsample. With the improvement in Photoshop CS's resampling methods I've seen this belief disputed recently. In the end for ME I find I can't see any of these possible differences so I don't worry about it. One thing I do do though is send 300dpi to a bureaux if that is the requirement. I don't leave prepress to chance.
I hope this helps. Patrick.
http://www.patrickbaldwin.com 020 8891 2516 07802 408 638 A member of The Association of Photographers
=============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
