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So, who was the distributor and what was their product code? At $50 I'm reluctant to experiment but at $10 I'd like to give them a try... Rick Cambra wrote: > > Others on this list have far more experience than I do with color balanced > lights, but my understanding is that Ott was a Doctor who originally had the > lights made to help patients with Depression. > > I also understand that he had others make the lights for him and he never > made them himself. Some of the vendors I believe were Phillips and > Sylvania. > > I purchased the swirl type with standard screw-in base as you have, balanced > for 5000k for photo proofing, from a wholesale distributor for $10.00 and to > be honest it appears to be very accurate. > > I know this doesn't help. > > Rick Cambra > Shutter Leaf Photography > > ----- Original Message ----- > > From: "Julian Vrieslander" <email@example.com> > To: "Epson-Inkjet List" <firstname.lastname@example.org> > Sent: Saturday, May 11, 2002 3:30 PM > Subject: Adventures with cheap proofing lights (long) > > > Following the recommendations of some people on this list, I have been > > trying various Ott-Lite products as proofing lights. > > > > <http://www.ott-lite.com> > > > > The idea is hard to resist. A simple cool-running flourescent lamp that > > costs less than $100, but provides color balanced light. Perhaps not the > > equal of a calibrated light booth costing hundreds more, but good enough > for > > judging print quality against a calibrated monitor. I'm finding out that > > the real story is somewhat more complicated and confusing. > > > > About two years ago I visited the Ott-Lite booth at the NYC MacWorld Expo. > > The guy at the booth could not give me any useful technical info. But I > > decided to try their cheapest product: a compact "swirl" bulb with a > > standard screw-in base. Cost $50. I installed the bulb in an old > > Luxo-style crane lamp on my desk. > > > > Now to qualify my observations, I should say that I have not had any > > experience with other proofing lamps or light boxes. I do have a > > Just-Normlicht 5000K lightbox for viewing slides. We have two good > > monitors, a Sony 21" CRT (GDM-F520) and Apple LCD (17" Studio Display). > > Both are calibrated to 6500K with Colorvision Monitor Spyder and OptiCAL. > I > > print from a Mac G4 running Photoshop to an Epson 1280, using a > > color-managed workflow. I use Epson inks, usually onto MP-HW, via a > custom > > profile from Chromix. > > > > Prints dry for several hours (or overnight), and then I mount them on an > > easel off to the side of the monitor. The Ott-Lite-in-crane-lamp is > > positioned so it illuminates the paper to about the same brightness as the > > screen image. If I set Photoshop to use the proof setup for my custom > paper > > profile, the screen/print match is actually damn close. The print looks a > > bit warmer, perhaps because the color temp of the Ott-Lite is nearer to > 5500 > > than 6500K. Furthermore, the prints look really pretty. Colors are > bright > > and natural, whites and blacks are neutral, and it is easy to see fine > > gradations of hue. Overall appearance is similar to the original slide on > > my light box. > > > > Now the story gets confusing. I ordered another Ott-Lite swirl bulb as a > > Xmas present for a friend. Before packing it up, I tried it out. The > color > > balance of that bulb was slightly different than mine (noticably cooler, > > with weaker reds), and not quite as bright. > > > > We also bought another Ott-Lite product, a floor-standing lamp that was > > advertised as one of the products in their Super D-5000 line. The > > advertisement claims that this is a new series of bulbs, with phosphors > > "specially formulated for digital imaging and color proofing," and > designed > > to meet ISO D-50 standards. When I first turned on the lamp, I was > > perplexed. When compared against my monitor, prints looked slightly > > yellow-greenish, with muddy colors. After several calls to Ott-Lite, they > > eventually informed me that this lamp (model L18330) had a "Vision Saver" > > bulb, not a Super D-5000. Their advertisement was incorrect. They > > apologized and sent me, gratis, two Super D-5000 replacement bulbs. But > > these do not appear to be significantly different than the Vision Saver > > bulb. I still get a much better screen/print match (and a more natural > > pleasing appearance) when I use the cheap swirl bulb. Strange, since that > > product is not even promoted as a standards-compliant bulb. > > > > The Super D-5000 floor lamp does not work well for print checking, so I am > > giving it to my mother for use as a reading lamp. > > > > I much prefer that little swirl bulb. Notice that the Ott-Lite web site > > lists at least three codes for swirl bulbs: OPB20SW, OTL20SWB, and B20500. > > They are mentioned as items in the "Natural Light Supplements" line, and > > also in the "True Color" line, but the association with the product codes > > varies, depending on whether you are reading the pages which promote their > > bulbs for dental offices, graphic artists, reptile terrariums, makeup and > > beauty professionals, etc. So which bulb do I have? I don't know. The > > packaging says OPB20SW, and the code on the bulb base is OTL20SWB. > > > > The Ott-Lite web site is full of such inconsistant information, and when I > > call them to ask for information, their people are clueless. I requested > > some technical datasheets to explain the differences between the various > > product lines (CRI, color temperature, spectra, etc.). I was told that > they > > have no information to give out, but that they get a lot of requests for > it. > > > > My tentative bottom line conclusion: These guys may have some things > which > > are useful as proofing lights, but it is hard to figure out which are the > > appropriate product codes, whether those codes have any consistent > > relationship to the products that they ship, and whether their quality > > control can be trusted. An alternate possibility is that my expectations > > for the proper functioning of a proofing light are all wrong. > > > > If anyone has more experience with Ott-Lite and can explain what is going > on > > with this stuff, I would be very interested. > > -- > > Julian Vrieslander <email@example.com> > > > > - > > Turn off HTML mail features. Keep quoted material short. Use accurate > > subject lines. http://www.leben.com/lists for list instructions. > > > > > > - > Turn off HTML mail features. Keep quoted material short. Use accurate > subject lines. http://www.leben.com/lists for list instructions. - Turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for list instructions.