I've always been curious as to why Germany needed their own national Gold derivative. It's not like German skin tines are different from the rest of europe or something. I always assumed it was the same Gold just named differently but if it's really a derivative made specifically for the German market, why.......
Edited after finding new information:
I've now found a datasheet for Farbwelt 100 & 200 from 2007 - and the curves, dye densities and spectral sensitivities given there are identical to those in the 2007 Gold 100 & 200 - but the information that Shanebrook (
@laser ) gives in his book states that the colour balance of Farbwelt was for the German market - it's definitely something that would be interesting to know more about.
The only immediate thing I can think of is that perhaps Agfa was more influential in the world of industrial photofinishing in Germany & it made sense to adjust Gold for that market to fit the defaults being used, rather than trying to get the photofinishers to keep changing channels for other manufacturers. On the other hand, there is nothing specific in the Farbwelt data sheet to the effect of anything to do with this. I'd be really interested to know what each country's colour balance preferences were!
As for Pro Image and Lomo 100, after cross checking with the available data (1997 in the case of Pro Image - so, an obvious big, big caveat if there have been subsequent changes), you can see where the differences are with Gold-100-7 - Pro Image is contrastier overall, has shorter red sensitivity with less of a gap at 575-625nm, and other differences in terms of colour sensitivity (harder cut-off at bottom of blue sensitivity and higher overall blue/ green sensitivity) and dye densities (e.g. generally higher overall and with higher minimum density in the 480-580nm range). Overall, the results from
@brbo tally with this. It gives more weight to Lomo 100 being Gold 100, I'd argue - however, with a small contrast and colour adjustment, the Pro Image can be brought remarkably close to the Lomo, so I can see where the claims others have made could come from. And none of this necessarily precludes Gold 100 from being where Pro Image derives from - it may have different finish addenda, anti-halation, sensitisers/ super sensitisers/ trimmer dyes, means of boosting the dye density from a given set of couplers etc.