Re: [Nuke-users] 32 bit to 8 bit conversion?

2012-03-07 Thread Juan Galva 
keep us posted, please!

On 7 March 2012 16:27, Richard Bobo richb...@mac.com wrote:

 Thanks, Julik, Andy, Diogo and Simon for your suggestions, ideas and
 questions...

 After trying a number of things and reading some more about the way ProEXR
 and Photoshop handle things, we're going to try to make our tweaks in Nuke
 and let Photoshop do whatever it does. It may take a few rounds of tweaking
 and converting to see just what we need to do on the Nuke side to make it
 come out the way we want on the Photoshop end. However, it seems like there
 are just too many variables there. So, we'll not try to fight it...  (8^\

 Thanks for your help!

 Rich


 Rich Bobo
 Senior VFX Compositor
 Email:  richb...@mac.com  
 Mobile:  248.840.2665
 Web:  http://richbobo.com


 On Mar 07, 2012, at 07:00 AM, Simon Björk si...@stillerstudios.se wrote:

 In what application are you comparing the result of the TIFFs? Nuke or
 Photoshop? I believe Photoshop use linear light math when in 32bpc and in
 that case, the blending of layers (and brightness) will look different if
 you change your project to 8 or 16-bit.



 2012/3/7 Julik Tarkhanov ju...@hecticelectric.nl


 On 7 mrt 2012, at 01:51, Rich Bobo wrote:

 The problem is that we need to get 8 bit layered TIFs out of Photoshop.

 I think the first problem is that the Photoshop blending is profoundly
 affected by the bit depth.
 The second problem is that if Nuke does a 1D lookp table conversion from
 one kind of RGB to another
 (including bit depth upgrades), Photoshop goes via Lab so what is
 happening is more like to a 3D LUT.

 What happens in your case is that probably Photoshop is converting the
 layers first, and then the result of the blending
 modes changes the way the images look. Maybe it's an issue with layer
 mask and front unpremultiplication and conversion.

 For me the first thing to check would be the PS profile settings for
 8-bit RGB. Also, where do the discrepancies occur the most?
 Blended layer edges? Maybe your workflow needs to be related to manually
 unpremulting layers by the layer transparency and
 preadjusting the transparency grays...
 --
 Julik Tarkhanov | HecticElectric | Keizersgracht 736 1017 EX
 Amsterdam | The Netherlands | tel. +31 20 330 8250

 cel. +31 61 145 06 36 | http://hecticelectric.nl







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 --
 
 Stiller Studios
 Lidingö/Sweden

 Simon Björk
 Stiller Studios
 +46 (0)8 555 23 560
 Ekholmsnäsvägen 40, S-181 41 Lidingö
 si...@stillerstudios.se
 www.stillerstudios.se

 find us:
 http://www.eniro.se/query?search_word=stiller+studiosgeo_area=liding%F6what=all


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Y ella dijo: La ilusión mueve el mundo
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Re: [Nuke-users] Disjoint-over

2011-12-15 Thread Juan Galva 
intresting how the patterns changes when modifying the Transform filter...

On 15 December 2011 14:49, Ron Ganbar ron...@gmail.com wrote:

 Strange. I wonder if this can be explained rather than just shrugged as a
 bug.


 Ron Ganbar
 email: ron...@gmail.com
 tel: +44 (0)7968 007 309 [UK]
  +972 (0)54 255 9765 [Israel]
 url: http://ronganbar.wordpress.com/



 On 15 December 2011 15:10, makis nuke-users-re...@thefoundry.co.ukwrote:

 **
 Hi all,

 nice effect with the merge node [image: Smile]
 (v6.3v5 on Linux)



  http://imageshack.us/photo/my-images/809/disover.jpg/



 set cut_paste_input [stack 0]
 version 6.3 v5
 Constant {
 inputs 0
 channels rgb
 color 0.115
 name Constant1
 selected true
 xpos 63
 ypos -4
 }
 set N4ea1ab0 [stack 0]
 AddChannels {
 channels alpha
 color 1
 name AddChannels1
 selected true
 xpos 63
 ypos 85
 }
 Transform {
 translate {-146 -150}
 rotate -0.6
 scale 0.333
 center {512 512}
 name Transform3
 selected true
 xpos 60
 ypos 139
 }
 push $N4ea1ab0
 Dot {
 name Dot6
 selected true
 xpos 207
 ypos 23
 }
 Merge2 {
 inputs 2
 operation disjoint-over
 name Merge2
 selected true
 xpos 173
 ypos 139
 }

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Y ella dijo: La ilusión mueve el mundo
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[Nuke-users] change from daily digest

2011-10-11 Thread Juan Galva 
 Hi guys,

I would like to cancel the daily digest of my subscription to the mailing
lists (users and python)

how can I achieve that?

thanks
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