Education Forums
| View previous topic :: View next topic |
| Author |
Message |
Graeme Gill
Guest
|
 Posted: Sun Apr 06, 2008 7:08 am Post subject: Re: Trapping, Neutral Density |
 |
|
Gernot Hoffmann wrote:
| Quote: |
Remark: this is obviously not a VISUAL density.
|
Well, it is if the illuminant is assumed to be the equal energy "E"
illuminant !
Graeme Gill. |
|
| Back to top |
|
 |
| |
Ads |
Advertising
Sponsor
|
|
Gernot Hoffmann
Guest
|
| Posted: Sun Apr 06, 2008 6:10 pm Post subject: Re: Trapping, Neutral Density |
|
|
Graeme Gill schrieb:
| Quote: |
Gernot Hoffmann wrote:
Remark: this is obviously not a VISUAL density.
Well, it is if the illuminant is assumed to be the equal energy "E"
illuminant !
Graeme Gill.
|
Illuminant E or D50 (relevant for prints): the difference doesn't
matter
for trapping. Much more important is the totally wrong sorting by
luminance Y concerning visual lightness:
http://www.fho-emden.de/~hoffmann/gray10012001.pdf
Page 8,9,10: the color palettes top right are sorted by Y.
I had mentioned this already a while ago. Now it seems to be
even more important, considering trapping based on 'Neutral
Density'.
Best regards --Gernot Hoffmann |
|
| Back to top |
|
|
| |
Ads |
Advertising
Sponsor
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
93 Attacks blocked
Powered by phpBB © 2001, 2005 phpBB Group
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
