There are specific test that can be done with equipment this is true. But many photographers will NOT go out and but it, nor will they field test 15 lens 3 of each type, just to get the best. Their ability to visually discriminate which is best may also hamper their choice. So, for many using the digital paradigm of USM, Sharpening in PS and all the other avenues of image enhancement to a direct comparison to film, through lens to paper is going to be a wild and wooly path. This is why in another forum I recently stated that with all the information running around about this method and that method as being "the best", you really need to look long and hard at personal bias and precise workflow being cited. There is lots of out dated information, slightly wrong, wildly wrong, right but for a different workflow input and output. Etc. The level of pixel placement of paper is wide and varied. I still think that many fine prints are being made the old fashioned way; silver and paper. All images captured with a lens are optical illusions. All it takes is one trip to the optometrist to confirm that. : ) There is an interesting test on the xrite site that was being discussed on the Alt Photo Process group. This is kind of fun: http://www.xrite.com/custom_page.aspx?PageID=77 Visually we see things differently. How we get there is also open to boat loads of path that can all arrive at the same dock but the absolute path taken by anyone of us is quite different. So my point here is that some may have developed, adopted, or otherwise come to a workflow. Their lens selection may enhance or be hindered by that workflow. Eric Neilsen Photo 4101 Commerce Street, Suite 9 Dallas, TX 75226 214 827-8301 http://ericneilsenphotography.com SKype ejprinter _____ From: DigitalBlackandWhiteThePrint@yahoogroups.com [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Cdtobie Sent: Sunday, September 28, 2008 8:15 AM To: DigitalBlackandWhiteThePrint@yahoogroups.com Subject: Re: [Digital BW] DSLR sharp? -- was How tiny dots determine real resolution in a B&W ink print Post-capture sharpening is an optical illusion, so testing it is not as straightforward as counting visible lines per inch. I don't believe there would be any valid method other than visual evaluation, at a fixed distance, using side by side prints with the same size, image, media, inks, printer, profile and lighting . But then; the results would really only tell you about that combo, and might well be different for other combos. C. D. Tobie WW Product Technology Mngr. Digital Imaging & Home Theater DataColor.com CDTobie@DataColor. <mailto:CDTobie%40DataColor.com> com On Sep 27, 2008, at 7:48 PM, "E Neilsen" <e.neilsen2@worldnet <mailto:e.neilsen2%40worldnet.att.net> .att.net> wrote: > Paul, Sharpness in the digital landscape has always been an issue > for me. > Aside from the mechanics of focusing the light on the senor, we also > have to > deal with processing of the image; USM in Photoshop, Clarity Slider > in LR, > Nik Sharp, etc. There are many ways to improve or screw up an > image. IS any > one aware of a good comprehensive test or series of test that have > been done > to take the myth and marketing out of it and get down to the brass > tacks? > > > > Eric > > [Non-text portions of this message have been removed]
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RE: [Digital BW] DSLR sharp? -- was How tiny dots determine real resolution in a B&W ink print
2008-09-28 by E Neilsen
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