Digital BW, The Print

On 11/06/2013 03:36 PM, Fred Fischer wrote:
> A few questions:
> -How long have Baryta papers been around?
> -Does knowing that a B&W print made on "low" (Aardenburg) OBA papers
> will only be shown under museum condition (no UV lighting) make a
> difference?
> Fred's Signature
>
> --Fred Fischer

At least since 1900.
OBAs were used from 1950 onwards.

Make a difference?  The OBA effect will not happen so the paper will be 
warmer and less reflective. The degradation of the OBA dyes can still 
happen though due to oxidation and visible light.

The idea that OBA degradation in time delivers a paper white of a 
non-OBA paper is not so certain. There can be "unnatural" color shifts 
as I understand it.

-- 
Met vriendelijke groet, Ernst Dinkla

http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
December 2012: 500+ inkjet media paper white spectral plots.