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Photo Forum / Film Photography / Darkroom / May 2004Colour paper contrast. Grades?
B&W paper comes in different grades. Other then paper company ad copy is there anything that tells you how high/low the contrast is on a paper? Before you buy it. For example Kodak Portra is supposed to be low contrast. Kodak Edge is supposed to be much higher in contrast. Is it possible to compare the differences to the B&W grade system? Thanks Nick > B&W paper comes in different grades. Other then paper company ad > copy is there anything that tells you how high/low the contrast is on a [quoted text clipped - 4 lines] > Thanks > Nick Run a step wedge comparision, after its all just sensitometry. I made a simple guide negative a few years ago and calibrated my printing method to it, once I got the time and printing filteration correct for one paper emulsion I used it to judge subsequent papers and emulsion for the same type. I used a grey card, and "paint" color patches to get me in the realm of reality (I think ;-)  SignatureLF website http://members.bellatlantic.net/~gblank <<<For best results expand this window at least 6" at 1152 x 768 resolution > Run a step wedge comparision, after its all just sensitometry. > [quoted text clipped - 5 lines] > I used a grey card, and "paint" color patches to get me in the realm of > reality (I think ;-) Thank. I'm trying to get an idea if any of the published information from the companies objectivly provides something like paper grades. Nick > B&W paper comes in different grades. Other then paper company ad > copy is there anything that tells you how high/low the contrast is on a [quoted text clipped - 4 lines] > Thanks > Nick Nick, Kodak's Endura (and earlier the III series) has what amounts to 3 grades. Portra, which is about grade 2, Supra about grade 2 1/2 to 3 and Ultra which is about 3 1/2 to 4. Ctein writes about this in _Post Exposure_. Jim > Kodak's Endura (and earlier the III series) has what amounts to 3 grades. > Portra, which is about grade 2, Supra about grade 2 1/2 to 3 and Ultra which > is about 3 1/2 to 4. Ctein writes about this in _Post Exposure_. How would the non pro papers slot into this? When I was picking up some chemicals last week I had to stand behind a wedding photographer and listen to him complain about the mini-lab prints he had picked up. White brides dress black tuxedo. You could see the woman behind the counter just wanting to tune him out while he rambled. They didn't actually look bad. Nick > > Kodak's Endura (and earlier the III series) has what amounts to 3 grades. > > Portra, which is about grade 2, Supra about grade 2 1/2 to 3 and Ultra which [quoted text clipped - 7 lines] > > Nick I'm not 100% sure, but the consumer grade papers offered by the high volume photo processors is likely the middle 'grade'. This would give you a somewhat higher contrast than needed. Ctein states the Agfa paper is actually lower in contrast than the Portra. Never tried it or the Fuji Crystal either. Personal tastes is the reason. A pro (?) wedding photographer using a Mini-Lab? His own fault! > I'm not 100% sure, but the consumer grade papers offered by the high > volume photo processors is likely the middle 'grade'. This would give you a [quoted text clipped - 3 lines] > > A pro (?) wedding photographer using a Mini-Lab? His own fault! Mini printers use so many different papers its hard to say unless you read the backside of the paper in question. There are different flavors of mini labs mind you,... my local camera store has an in house mini lab, they are pretty fair at what they do, although perhaps pricey compared to some prolabs that have mini printers and offer it as cut rate service. They also develop slide films etc but but because they use roller transport to process film and cannot do 4x5 I would not classify them as a true pro-lab. SignatureLF website http://members.bellatlantic.net/~gblank <<<For best results expand this window at least 6" at 1152 x 768 resolution > A pro (?) wedding photographer using a Mini-Lab? His own fault! I just glanced at the odd print while waiting for the manager to look up some things for me. They looked too good to be a casual snapshooter. I wasn't paying a great deal of attention but had to wait awhile. Every so often he would complain about detail in the dress and say some thing like "This looks perfect on the computer. The fuji should print it exactly right". Nick > > Kodak's Endura (and earlier the III series) has what amounts to 3 grades. > > Portra, which is about grade 2, Supra about grade 2 1/2 to 3 and Ultra which [quoted text clipped - 7 lines] > > Nick Pros: they give amateur photographers a bad name. |
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