Mark - I've done similar tests and without a doubt a MF scan will beat a 6 mp exposure in terms of resolution, even on a cheap scanner.
But I'm not sure what the up sampling using nearest neighbor was all about. But then - I'm not sure what 'pixel peeper' means. (I used to read about 'Tyros' and never knew what that meant either, but I seem to have outlasted the term with no ill effect from my ignorance.) You got it right, I'm just confused about some the steps you took there... - MCC Mark Erickson wrote: > I pulled the original images out of my archives, did a little prep work, and > put the results up for review. Here is a summary of what I did and what I > got. > > 1) Scanned medium format workflow > -->Rolleiflex 3.5E (6x6 medium format) > -->Kodak 400 T400CN > -->Epson 4870 (resolution set to 2400 dpi) :5280 x 5279 image > --> resize down to 660 x 660 for web > > http://www.westerickson.net/mark/misc/rolleilibrary.jpg > > --> crop at original resolution, then upsize 2x using "nearest > neighbor" > > http://www.westerickson.net/mark/misc/rolleilibrary200.jpg > > > > 2) Web Gallery: http://www.westerickson/brickwork/ > -->Pentax *ist-Ds + 31mm F1.8 Ltd (raw) > --> bring into photoshop with Adobe Camera Raw: 3008 x 2008 image > --> resize down to 1049 x 700 for web > > http://www.westerickson.net/mark/misc/dslibrary.jpg > > --> crop at original resolution, then upsize 4x using "nearest > neighbor" > > http://www.westerickson.net/mark/misc/dslibrary400.jpg > > > I upsized in Photoshop CS2 using the 'nearest neighbor' algorithm to > simulate what happens when most image editing software 'pixel peeps' at more > than 100% size. Note that the images were taken on different days under > different lighting conditions (overcast vs open shade), so the contrast is a > little bit different. It's not a perfect controlled test, but I do think > that it shows that a 50 year old camera and a $400 scanner can provide more > resolution than a 6 megapixel DSLR and a really good lens. > > Comments? Questions? > > -- - - - - - - - - - - - - - - - - - - - - Mark Cassino Photography Kalamazoo, Michigan www.markcassino.com - - - - - - - - - - - - - - - - - - - - -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
