fadi3d Posted June 21, 2008 Share Posted June 21, 2008 guys i was experimenting with Chris Nichols Method (the one in Speed Vs Quality) and i was wondering if for first bounce we have to use Brute Force or Irr ? and if Brute Force Does the the Subdiv Matter ? as he sets tthe Adap Amount to 1. instead of 0.85 and guys is the Lanczos or Sync filter Very Different ?and How? Link to comment Share on other sites More sharing options...
BrianKitts Posted June 21, 2008 Share Posted June 21, 2008 (edited) The comment is made in the tutorial that he is typically is working with animated scenes which is why he defaults to using a brute force method. If you aren't animating Irr Map is still the way to go IMO. As for the AA filtering types check out the bottom of this page from the following link, it explains the filters types and their application. http://www.spot3d.com/vray/help/150SP1/examples_image_sampler.htm edit: I just realized Lanczos isn't on that page.... so a couple links posted by chris on chao's forums might give you some better answers.... most of these can be found on wikipedia is you are really interested http://en.wikipedia.org/wiki/Lanczos_filter http://en.wikipedia.org/wiki/Sinc_filter http://en.wikipedia.org/wiki/Gaussian_filter ... As well as many others: http://en.wikipedia.org/wiki/List_of_numerical_analysis_topics#Interpolation And yes.... Lanczos is my filter of choice, if I need anything sharper I'll do it in post. Edited June 21, 2008 by BrianKitts Link to comment Share on other sites More sharing options...
fadi3d Posted June 21, 2008 Author Share Posted June 21, 2008 chris thanks for the link man altough it seems they don't mention th Lanczos Filter.Still i got another question for u man (or any one that might jump in) i don't know if u read my last Thread (Any vray Wizard ?)but if ur familiar with this method Chris states that almost all of the time he settles for Dmc 1-16 and Clr 0.01 and sometimes he goes for 1-25 and Clr 0.005. my Question is :is it exact sience (ie the relation between the Dmc numbers and the Clr Thresh or we have to do some testing ? thank u For ur time it's always a pleasure Communicating with u guys . Link to comment Share on other sites More sharing options...
Crazy Homeless Guy Posted June 21, 2008 Share Posted June 21, 2008 additional info... http://www.chaosgroup.com/forums/vbulletin/showthread.php?t=37212 The sinc filter is a sharpening filter, while the lanczos one is a smoothing filter. They are neither particularly faster nor slower than the standard filters, but may look somewhat better (although this is very subjective). Best regards, Vlado if you are not doing an animation, and speed is the issue, i would recommend experimenting with no AA filter. you can do a good job controlling the AA in the image through the sampling parameters, then adjust in post as Brian noted to suite your taste. Link to comment Share on other sites More sharing options...
fadi3d Posted June 21, 2008 Author Share Posted June 21, 2008 In the above, can be expanded to: Man That is Cruel, i was looking For something like use it if u want Sharpness or the other one is faster... but i appreciate the effort and man ur fast take care Link to comment Share on other sites More sharing options...
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