Is Epson Exhibition Fibre the same as Traditional Photo Paper

[Jeff-Grant]

Thanks Brian. Got it. I haven't heard of this with HPR Baryta or IGFS. Is that because I haven't looked?

[hugowolf]

Thanks Brian. Got it. I haven't heard of this with HPR Baryta or IGFS. Is that because I haven't looked?

Why it happens, is up for discussion, and has been discussed on these forums in the past. But, Hahnemühle Photo Rag Baryta doesn't appear to have any OBA content, and while Ilford Gold Fibre Silk appears to have more than it used to, it still has a lot less than Epson Traditional/Exhibition Fibre. It could also be where the OBA dyes are in the papers (throughout, top, base, surface coating), when they are added, the type of dyes they used, who knows?

If you do not have a spectrophotometer and software necessary to measure paper spectral reflectance, do yourself a favour and download Ernst Dinkla's Spectrum Viz app. It has measurements for several hundred papers. (That peak around 440 nm is indicative of OBA content.)

http://www.pigment-print.com/spectralplots/spectrumviz_1.htm

It is a very useful tool, and it is very good of Ernst to put all this data out for anyone to use.

Brian A

[Jeff-Grant]

Thanks Brian. I've got all the gear necessary including an io that I bought when the price was still reasonable. I'll look at Ernst's info too.

[Ernst Dinkla]

Check Aardenburg-Imaging tests of the EEF, about 8 if I recall it correctly. Especially the shift of the paper white in time. This shift goes beyond the deactivation of the OBA, there is more going on. There are papers that stand time better, even some papers with OBA content.

Met vriendelijke groet, Ernst

http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
December 2014 update, 700+ inkjet media white spectral plots

[hugowolf]

Thanks Brian. I've got all the gear necessary including an io that I bought when the price was still reasonable. I'll look at Ernst's info too.

If you want to do spectral plots using an i1Pro 2, the easiest way I have found is with ColorPort 2.0 (free download from X-rite), with 3 or 5 blank patches, data saved as a CSV file, then opened in a spreadsheet, averaged for each wavelength, and then plotted. If you are interested in the affects of OBAs, include UV and do the extended range from 380-730 nm, rather than the default 400-700 nm.

Brian A