Re: OT: HDR and Tone Mapping B&W Images
Hi Judy, Thanks for the questions and thanks for the compliment. Let me try to answer your questions: > Assuming the photos shown were sent to Camera Arts as digital files, how >> large were those files? And if you wanted to make actual prints (in >> color), could you? By inkjet? Or? Magazines will ask for CMYK (if they are smart) or RGB files at a specific size (expressed in inches in the U.S.) and resolution. 300 ppi (pixels per inch) is a common request when the publication is being printed at 150 lpi (lines per inch). I do print these images as inkjet prints. Without getting into the whole editioning logic or pretense, I'm doing two sizes of prints: 12"x18" on 17"x22" Crane Museo Max paper and 20"x30" prints on 24"x36" Crane Museo paper. The reason for two different papers is one of convenience; the papers come precut to those sizes, but not in one paper surface. Jill and I both like the sheets because they are so wonderfully heavy (360 gsm). In fact, the paper is so heavy that it can't be rolled. >> Naturally I think about translation into gum prints via color >> separations. >> Would color-separating your finished HDR file be different from simply >> making different coats from different color seps without the intermediary >> HDR? Or, it occurs to me, maybe gum printers who do about 20 coats have >> done HDR, so to speak, already? Having never done gum I'm sorta guessing but it seems that, once you have your final HDR image on your computer monitor, the gum separations would be the same as for any other image. It seems that you gum printers have all sorts of tricks up your coating sleeves but controlling dynamic range is something that you'd approach well before the coating stage IMHO. >> Last question: why is the process "off topic"? Isn't it "alternative >> photography"?. (Whatever you call it, thanks and congratulations -- >> they're great !) Well, the original poster (Don) was probably trying to be polite to those who take great offense at being tricked into reading text that doesn't relate to their areas of interest. One person's *alt* is another's *mainstream.* Happy printing, Judy! When are you gonna take the train up to visit us? Dan Judy Seigel wrote on 8/15/07, 11:26 PM: > > Dan, I love the photos -- they put true fantasy on my monitor... > delicious! But to one who hasn't done the HDR process or used the > software, some questions demand to be asked. > > First, tho, I have one point of disagreement. George De Wolfe writes in > Camera Arts that folks said they hadn't realized the extent of the > disaster until they saw your photos. > > Oh, come on... My living room looks like that all the time, without > even a > strong wind down the chimney. > > But here's what I wonder: > > Assuming the photos shown were sent to Camera Arts as digital files, how > large were those files? And if you wanted to make actual prints (in > color), could you? By inkjet? Or? > > How large do you think you'd print them, or would that be figured in the > doing? > > Naturally I think about translation into gum prints via color > separations. > Would color-separating your finished HDR file be different from simply > making different coats from different color seps without the intermediary > HDR? Or, it occurs to me, maybe gum printers who do about 20 coats have > done HDR, so to speak, already? > > Last question: why is the process "off topic"? Isn't it "alternative > photography"?. (Whatever you call it, thanks and congratulations -- > they're great !) > > Judy > -- www.DanBurkholder.com www.TinyTutorials.com
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