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

2012-03-07 Thread Julik Tarkhanov
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

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

2012-03-07 Thread Rich Bobo
Hi,We're not happy with the way that Photoshop converts 32 bit layered TIFs to 8 bit - it visibly changes transparency and brightness. We can avoid the problem if we Merge the layers first, but we need to preserve the layers. So, we'd like to see if we can do the 32 bit-- 8 bit conversion in Nuke,

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

2012-03-07 Thread Andy Walker
Are you also converting to sRGB when you convert to 8bit, or is it all staying linear? The layer blending will definitely change if you change colourspace, there's no way around that AFAIK. But if you are staying in linear or staying in sRGB, I'm not sure where your colour shifts are coming

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

2012-03-07 Thread Simon Björk
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

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

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

2012-03-07 Thread Richard Bobo
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

[Nuke-users] Gathering roto values to drive a tracker

2012-03-07 Thread Cesar Rodriguez
Hi there, Is there a way to link the translate and rotation values of a single point of a roto shape to a tracker on nuke? I want to gather the rotation and translation of 2 points of a roto shape and use that information to drive a tracker. Any help will be appreciated Cheers, César

Re: [Nuke-users] Gathering roto values to drive a tracker

2012-03-07 Thread Howard Jones
You can get the position of the point through the curve editor - to get the offset subtract the reference value. If you do this with 2 points then with clever maths that someone else can point you to you'd get the rotation. How you get rotation values from one point I dont know??   Howard

Re: [Nuke-users] Gathering roto values to drive a tracker

2012-03-07 Thread Magno Borgo
Yes, via python.I've created a script recently that does that. :)http://www.nukepedia.com/gizmos/bakerotoshapestotrackers/ Hi there,Is there a way to link the translate and rotation values of a single point of a roto shape to a tracker on nuke? I want to gather the rotation and translation of 2

Re: [Nuke-users] Gathering roto values to drive a tracker

2012-03-07 Thread J Bills
magno's scripts rock. if you've not seen his warper scripts, definitely worth checking out. unless I'm missing what you're after - you can right click a point in the viewer and copy point link and paste it onto the x/y curve of a tracker. you can set a 2nd point to derive rotation. you'll need

RE: [Nuke-users] Gathering roto values to drive a tracker

2012-03-07 Thread Cesar Rodriguez
Thanks for the tips. Cheers C~ From: jbillsn...@flickfx.com Date: Wed, 7 Mar 2012 11:44:12 -0800 Subject: Re: [Nuke-users] Gathering roto values to drive a tracker To: nuke-users@support.thefoundry.co.uk magno's scripts rock. if you've not seen his warper scripts, definitely worth

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

2012-03-07 Thread Adrian Baltowski
Hi   I want help or advise you something but I don't fully understand your workflow... You can of course make color conversion in nuke. Nuke is brilliant software to make such a conversions BUT What next?? You cannot export layered tiffs out of Nuke (at least not in usable form). Do you

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

2012-03-07 Thread chris
On 3/8/12 at 12:24 AM, (Adrian Baltowski) wrote: I want help or advise you something but I don't fully understand your workflow... You can of course make color conversion in nuke. Nuke is brilliant software to make such a conversions BUT What next?? You cannot export layered tiffs out of

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

2012-03-07 Thread Richard Bobo
Adrian, Thanks for wanting to help! Here are the parameters: -- CG render passes, comped and beautified in Nuke (auto work)... -- Ultimate deliverables for client are layered 8 bit TIFF files with alpha out of Photoshop (different parts of vehicle)… In order to ease the workload, we are trying

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

2012-03-07 Thread Randy Little
because you are using blend modes in photoshop that do not support float math(s) AND/Or you your working space ICC is not set up right. Randy S. Little http://reel.rslittle.com http://imdb.com/name/nm2325729/ On Wed, Mar 7, 2012 at 20:43, Richard Bobo richb...@mac.com wrote: Adrian,