ISO-3664:2009 illumination
ISO-3664:2009 illumination
- Subject: ISO-3664:2009 illumination
- From: Malcolm Mackenzie via colorsync-users <email@hidden>
- Date: Wed, 19 Jun 2019 14:30:03 +0100
Hello Roger
Yes the paper should appear bluer with the higher levels of UV.
You can buy some Plastic UV filtering sheet easily and hold it over the
print
to, sort of, have a comparison of UV /non UV illuminant which can be useful
when explaining the difference to clients.
https://www.cutplasticsheeting.co.uk/clear-acrylic-sheeting/anti-reflective-acrylic/
regards
Malcolm Mackenzie
On Tue, 18 Jun 2019 at 04:14, <email@hidden> wrote:
> Thank you, Malcom.
>
> You're right, the whole thing needs to be assessed, not just the tubes.
>
> I superimposed the spectrum image you sent with the one from my humble
> Excel
> sheet (tried to aligned them at 560nm) and it is clear that the new tubes
> have more energy around 360nm.
>
> https://1drv.ms/u/s!AkD78CVR1NBqkLUuwGMsH5ObGTay4A
>
> I still wonder what the visual difference is like, the same print viewed in
> two light booths, one with the old lamp and one with the new, E tubes? If
> the substrate incorporates a lot of OB, like b* = -6.00, the booth with the
> new lamps should make all color appear "bluer" overall, right?
>
> / Roger
>
>
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