Paper Spectrum Comparator

[Hermie]

Just noticed this on DOP forum.

Intro:
http://www.pusztaiphoto.com/articles/print...ms/default.shtm

Online version:
http://www.pusztaiphoto.com/articles/print...s/webchart.shtm

More on how to read the charts, see bottom part of:
http://www.outbackprint.com/printinginsigh...i042/essay.html

[AndyF2]

Just noticed this on DOP forum.

Intro:
http://www.pusztaiphoto.com/articles/print...ms/default.shtm

Online version:
http://www.pusztaiphoto.com/articles/print...s/webchart.shtm

More on how to read the charts, see bottom part of:
http://www.outbackprint.com/printinginsigh...i042/essay.html
[a href=\"index.php?act=findpost&pid=173268\"][{POST_SNAPBACK}][/a]

Very interesting, especially the online chart!  

Also note the amusing complication, that "OBAs are white or colorless compounds that work by converting ultraviolet light into visible light, thereby making the paper appear brighter or whiter."  

If you're finally happy with a print on OBA paper and frame it behind glass, the UV is now blocked and the OBA-based brightening is greatly reduced.  It's no longer the print you had intended.

Andy

[Geoff Wittig]

Love the interactive 0n-line chart, which lets you compare different papers. The results in terms of that big UV "bump" in the spectral response seems to closely match my perception of papers that are whiter than white.  

[Wayne Fox]

If you're finally happy with a print on OBA paper and frame it behind glass, the UV is now blocked and the OBA-based brightening is greatly reduced.  It's no longer the print you had intended.

[a href=\"index.php?act=findpost&pid=173345\"][{POST_SNAPBACK}][/a]

I see the logic in that, but it seems if that were true, most of those papers would then appear "yellow" or natural.  I really don't see any difference in a print behind UV glass and one that isn't.

I'll admit never looking that close, but it seems the difference would be pretty apparent.