justintime1 Posted March 15, 2006 Share Posted March 15, 2006 Dose any one know if it possible to stop Sean lights form being included in the GI. Link to comment Share on other sites More sharing options...
STRAT Posted March 15, 2006 Share Posted March 15, 2006 i would have thought thats impossible. i mean, how would you know? the very nature of gi is bounced and incidental enviromental lighting. so if you put in an omni light it would instantly effect the lighting gi solution. and if it did have the option to turn gi off from it (like by adding a render tag) how would you know whether it was giving the desired effect or not? try including/excluding altogether from objects. (found in the object's properties) perhaps you're looking the wrong way to achieve an effect. what exactly are you after? Link to comment Share on other sites More sharing options...
Thiago de Andrade Posted March 15, 2006 Share Posted March 15, 2006 If you're using mental ray you can turn GI off in the object's properties menu. Just right click on the selected object and then "properties", then access the Mental Ray tab and you can turn both caustics and GI off. Link to comment Share on other sites More sharing options...
justintime1 Posted March 15, 2006 Author Share Posted March 15, 2006 Hi there, Cheers for the suggestions. I always seam to come up against a bit of a issue when it come to lighting my models . Often they involve lots of light fittings and I try and get each light to give of a sense that it is operating but without it completely flooding the whole Seen with blinding light. I use a sky with a luminesan mat applied I also have a directional light to act as the sun and the internal space is filled with hanging up lighters and directional spots. I want to crate and even light throughout the whole seen, but where the light comes in from the windows and from the spots I want the light beams to be visible but not bleaching the seen. At the mo iv got parts of the seen far to bright and other parts to dark , any suggestion as to how to even this out would be appreciated. Link to comment Share on other sites More sharing options...
STRAT Posted March 15, 2006 Share Posted March 15, 2006 yup, it's all a case of learning c4d's lights. having the option to make a light be ignored from GI isn't needed. learn how to use a light's fall off and ranges options. this is basically what you need here. also look at adding low light emmitting omni lights as general light fillers, again, all attenuated so they dont flood the scene with light. this is a great technique for subbtly adding localised light to a dark area. Link to comment Share on other sites More sharing options...
Ernest Burden III Posted March 15, 2006 Share Posted March 15, 2006 And those STRAT local fill omnis can be set to a negative value--they will darken an area. Link to comment Share on other sites More sharing options...
STRAT Posted March 15, 2006 Share Posted March 15, 2006 absolutely. a light can also take light not just give it. Link to comment Share on other sites More sharing options...
justintime1 Posted March 15, 2006 Author Share Posted March 15, 2006 Thank you very much for the advice , I’ll not pretend iv sussed it. But I’m starting to understand a little at a time. I get overwhelmed by all the settings. Im going to set a render and il post in the morning. matt Link to comment Share on other sites More sharing options...
Frosty Posted March 15, 2006 Share Posted March 15, 2006 absolutely. a light can also take light not just give it. For those reading and thinking Strat and Ernest are nuts....many Cinema settings can go well beyond 0 and 100. For example a light can be set up to, I believe 1000%. it can also go into the negative range - effectively making it a black hole. Link to comment Share on other sites More sharing options...
STRAT Posted March 15, 2006 Share Posted March 15, 2006 we are nuts btw Link to comment Share on other sites More sharing options...
Sawyer Posted March 15, 2006 Share Posted March 15, 2006 But if you are put into a room do you darken it? And those STRAT local fill omnis can be set to a negative value--they will darken an area. Link to comment Share on other sites More sharing options...
Ernest Burden III Posted March 16, 2006 Share Posted March 16, 2006 For those reading and thinking Strat and Ernest are nuts.... I resemble that remark! Link to comment Share on other sites More sharing options...
edub Posted March 16, 2006 Share Posted March 16, 2006 we are nuts btw ex. A: santa hat sheep avatar... in MARCH! Link to comment Share on other sites More sharing options...
Sindala Posted March 16, 2006 Share Posted March 16, 2006 have you tried using the color mapping effect to even things out. that can also work quite well. P.S. i think you're all high quality cashew nuts! Link to comment Share on other sites More sharing options...
justintime1 Posted March 16, 2006 Author Share Posted March 16, 2006 Now then children. All this is washing right over my head. What I would appreciate is some constructive criticism of this image. I have managed to even out the light to some extent by using oimes with linear fall offs, but I’m still not happy with the effect. Any suggestions would be appreciated. Matty. Link to comment Share on other sites More sharing options...
Ernest Burden III Posted March 16, 2006 Share Posted March 16, 2006 Brighten up the maps used as monitor screens. Put your texture in the luminence channel. Decide whether or not to have it actually emmit light by checking or unchecking the GI options in the illumination part of the material. No reason for it to recieve GI. If it generates GI the effect would be nice, but take longer to render. What that will do is provide some brightness and contrast where you want it--the workstations. Right now its a picture about a very nice ceiling. Oh, and as suggested--try color mapping, found in the effects tab of the render setup panel. Set it to HSV exponential, start with a value of 1.5 dark, 1.0 bright Link to comment Share on other sites More sharing options...
justintime1 Posted March 16, 2006 Author Share Posted March 16, 2006 This colour mapping you speak of. I don’t wish to appear dim but I cant find it. Im using cinema 4d R9 and Iv looked underthe render setup under effects but it dosn’t seam to be there. Link to comment Share on other sites More sharing options...
Ernest Burden III Posted March 16, 2006 Share Posted March 16, 2006 edit render settings panel effects pane enable post effects flyout from tiny triangle at upper right select 'color mapping' from list settings: (check) Exponential (check) HSV model (check) Affect Background dark mult. 1.5 light mult. 1.0 Play with the dark setting, only use the light if you want to brighten dark areas at the expense of contrast. Link to comment Share on other sites More sharing options...
justintime1 Posted March 16, 2006 Author Share Posted March 16, 2006 Yep that is where iv been looking for it, but it evades me. Any other suggestion as to where It might be hiding? The help is greatly appreciated, Im still not entirely happy with the lighting but it is getting there. matty Link to comment Share on other sites More sharing options...
Ernest Burden III Posted March 16, 2006 Share Posted March 16, 2006 Oh. Which version are you using--I'm guessing 8.5? Colormapping used to be a plug-in, now its built-in. Does anyone remember where to get it? I think it was free... Link to comment Share on other sites More sharing options...
justintime1 Posted March 17, 2006 Author Share Posted March 17, 2006 Seams a bit odd doesn’t it. I’m using R9. I shall have a wee hunt for a plug in. Il keep you posted Ta Matty. Link to comment Share on other sites More sharing options...
Ernest Burden III Posted March 17, 2006 Share Posted March 17, 2006 Contact Maxon support, should be an easy answer. Also--have you tried the displays idea yet? Link to comment Share on other sites More sharing options...
justintime1 Posted March 17, 2006 Author Share Posted March 17, 2006 I shall get in contact with Maxon. I have indeed tried the display idea and it has given a good effect. I shall post a render once i get the time to render a still, at the moment I’m having to render an animation of the same model . Here’s another question for you. Would you use the same model and lighting setup to render a still as an animation? Link to comment Share on other sites More sharing options...
alexandre Posted March 17, 2006 Share Posted March 17, 2006 Seams a bit odd doesn’t it. I’m using R9. I shall have a wee hunt for a plug in. Il keep you posted Ta Matty. Color mapping is one of the new features in 9.5 - that's probably why you don't find it. There used to be a plugin for 9.1 (which is a free upgrade) at this location: ftp://lightline.homeunix.com/ColorMapping_03.zip cheers, alex Link to comment Share on other sites More sharing options...
justintime1 Posted March 17, 2006 Author Share Posted March 17, 2006 Hi there thanks for the post, sadly i cant get the link to work. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now