Have a check if there are spot colors or laquer or similar layers in the file. They can cause funny results. In the latest Acrobat Pro DC (part of CC) under Tools>PrintProduction there is a color converter that might help get this into the sRGB world.
Best of luck, Fabian On 10 February 2016 at 10:04, <[email protected]> wrote: > were they PDF’s? > if the pdf is still layered, possibly there is a specific layer for > creating those ultrablacks (if that is what’s going on) that you can turn > off - in illustrator or indesign or such (not PS). > Also, when there, and the files looks ‘normal’, you can simply try ‘export > for web’ as a png or jpg. > > > > *From:* Sebastien Sterling <[email protected]> > *Sent:* Tuesday, February 09, 2016 11:16 PM > *To:* [email protected] > *Subject:* Re: Softimage and CMYK > > Could i approximate it ? in sRGB ? god but this is a mess :( > > I don't think the client has any original sRGB artwork > > On 9 February 2016 at 22:05, <[email protected]> wrote: > >> I don’t think it’s a colorspace problem perse – as within normal ranges, >> going back and forth between RGB and CMYK isn’t so bad. >> >> The ultramarine blue in the blacks, might be something very different: >> a good print black is not 100% black and 0% C,M,Y each: this would result >> in a dark grey. >> So ‘designers’ add some of the other colors, up to almost 300% total, to >> deepen and tint the black. >> A cold deep black with lots of cyan, a warmer black with yellow or... >> everyone has his preference for mixing black it seems, and they even give >> their blacks fancy names. >> >> Of course that’s bound to give you trouble going back to RGB – as those >> are colors that are far outside the normal gamut of colors. >> The other way around, we would call them illegal colors, our pure 100% >> primary and secondary colors are among them. >> As the others have pointed out, welcome to a world of pain – doing some >> print work atm, having to mix and match 3D renders (linear), CMYK artwork, >> photographs (srgb), physical parts painted with pantone colors and more, >> and going back and forth between 3D and ps/illustrator and pdf - and it is >> a minefield. >> You have to inform your client that their artwork is purpose made for a >> certain printing effect which makes them unfit for other use. >> You might be better off scanning/photographing printed artwork or >> physical products or ... >> >> >> *From:* Sven Constable <[email protected]> >> *Sent:* Tuesday, February 09, 2016 10:38 PM >> *To:* [email protected] >> *Subject:* RE: Softimage and CMYK >> >> >> Even I don't get why black is ultramrine blue, I think it's not because >> of CMYK vs RGB but the embedded color profile. I get pdfs for print all the >> time, sometimes I even send CMYK renderings back to them (of course not >> rendered in cmyk but converted in PS afterwards and with their color >> profile attached). If converted from CMYK to RGB and vice versa I saw only >> minimal color shifting. It depends largely on color space and -profile. >> Remember CMYK and RGB are color models, not color space nor color profiles. >> >> >> >> If you import pdfs into PS, convert them to RGB and CMYK. If you see >> significant color changes between both, it'because of the color profiles >> that are assigned to CMYK and RGB inside Photoshop. I would just convert >> them to RGB and then test different color profiles (Edit->Convert to >> Profile). Tick 'Preview' and switch between the different profiles >> available. Maybe one of it will crush the blacks. >> >> That is a bit awful and I agree with Rob, the client should send you >> proper files. But it's difficult to say what is proper since 3D is not >> print is not film is not reality. In an ideal world they would send you RGB >> files with sRGB color profile but I doubt this will ever happen. They >> usually work with CMYK from start to finish. >> >> >> >> Are these product shots are meant for web or print? If print, they're >> possibly correct with black beeing blueish and the client expects the >> renderings accordingly …? >> >> sven >> >> >> >> *From:* [email protected] [mailto: >> [email protected]] *On Behalf Of *Sebastien >> Sterling >> *Sent:* Tuesday, February 09, 2016 8:30 PM >> *To:* [email protected] >> *Subject:* Re: Softimage and CMYK >> >> >> >> Basically the client wants a pack shot of thirty or so products, so we >> need to model them up and texture them. >> >> In order to texture them the client sent the original packaging files in >> .pdf format, but these where originally destined for print and so they are >> CMYK. >> >> the colors are off, it is most noticeable in the blacks, as they have all >> shifted to ultramarine blue. >> >> I don't know how to fix this, it is pretty baffling, :( >> >> >> >> On 9 February 2016 at 19:19, Rob Chapman <[email protected]> wrote: >> >> aah was part of the DTP revolution first time around with Aldus >> products... So I remember a bit about conversion having to get renders to >> the printers sometimes and being very disappointed with the blue greys :) >> >> >> >> firstly this may help >> >> >> >> >> >> and may explain why the colors changed. some colors simply do not fit >> between gamuts and will change regardless. >> >> >> >> so you have the CMYK plates and have to match in RGB to render and then >> convert back to CMYK again? oof. have you tried regenerating in photoshop >> from the separate CMYK and they match the printers provided RGB 0utput? >> >> >> >> Photoshop LAB color mode was invented for this no? better off starting >> with something super wide gamut really depends on what the printer is using >> to convert to RGB with or originally sourced from and what printer profiles >> etc eg is it coated or glossy paper , all that palava. >> >> >> >> if its one specific pantone color or a few then you are in luck as you >> can just render mattes like Mr Wuijster suggested and the printer can >> easily spot color these. >> >> >> >> good luck matching anything RGB with a printer tho...! >> >> >> >> >> >> >> >> On 9 February 2016 at 18:49, Rob Wuijster <[email protected]> wrote: >> >> It's not possible, unless you have the exact profile for the printer it >> was finalized for. >> And it's weird that black is ultramarine blue in your files. >> >> Just have them give you RGB's, or give them a ton of mattes so they can >> color correct the shit out of it again. >> >> That's what normally happens over here, as the Photoshop guys seem to >> like that workflow ;-) >> >> Rob >> >> >> >> \/-------------\/----------------\/ >> >> On 9-2-2016 19:35, Sebastien Sterling wrote: >> >> Trouble is here what i hace is in CMYK from the printers and already >> decolored, what should be black if ultramarine blue, am looking or a way to >> convert these images back to sRGB and back to what they should look like. >> there are lots of tutoriels on how to move from sRGB to CMYK but none for >> the reverse. or how to color correct it. >> >> >> >> On 9 February 2016 at 18:27, Sven Constable <[email protected]> >> wrote: >> >> CMYK generally is not very well suited for 3d because rendering itself is >> RGB. When you convert textures in PS from CMYK to RGB I would use 'relative >> colormetric' (color settings->conversion options). >> >> >> >> sven >> >> >> >> *From:* [email protected] [mailto: >> [email protected]] *On Behalf Of *Sebastien >> Sterling >> *Sent:* Tuesday, February 09, 2016 7:13 PM >> *To:* [email protected] >> *Subject:* Softimage and CMYK >> >> >> >> Hey list, am working on a job with package assets art in CMYK. Soft won't >> display them. >> >> Does softimage not support CMYK ? >> >> Also, when you move from srgb to CMYK in photoshop there is a color shift. >> >> is it possible to reverse this process ? >> >> Sorry for weird noobie questions, am not accustom to working with CMYK in >> production. >> >> is weird. >> >> >> >> Geen virus gevonden in dit bericht. >> Gecontroleerd door AVG - www.avg.com >> Versie: 2016.0.7357 / Virusdatabase: 4522/11592 - datum van uitgifte: >> 02/09/16 >> >> >> >> >> >> >> > >
