{"id":547,"date":"2016-03-31T16:31:06","date_gmt":"2016-03-31T16:31:06","guid":{"rendered":"http:\/\/blogs.gre.ac.uk\/fachsupport\/?p=547"},"modified":"2016-03-31T16:31:06","modified_gmt":"2016-03-31T16:31:06","slug":"rendering-good-practice","status":"publish","type":"post","link":"https:\/\/blogs.gre.ac.uk\/designsupport\/2016\/03\/31\/rendering-good-practice\/","title":{"rendered":"Rendering Good Practice"},"content":{"rendered":"

Rendering, like printing, is one of those tasks that always takes far longer than you expect. \u00a0While it is important to have good quality, sharp final images simply dragging all the sliders up to maximum quality is likely to have little visible difference but will significantly increase the time taken – and also the likelihood of the machine crashing altogether.<\/p>\n

Think about what you are rendering – turn off layers \/ objects that you won’t see; there’s no point having complex hinges included in a distant perspective for example. \u00a0Similarly, thousands of trees with dense branches,etc are going to kill a render as each twig needs shadow calculations etc. Consider adding people \/ foliage \/ rain \/ etc in Photoshop<\/p>\n

For render sizes; the following is a list\u00a0of image resolutions that will fill A3\/A2\/A1 sizes:<\/p>\n

150 DPI (Sensible)<\/strong><\/p>\n

A3 – 2480 x 1753<\/p>\n

A2 – 3507 x 2480<\/p>\n

A1 – 4966\u00a0x 3507<\/p>\n

200 DPI (Ambitious)<\/strong><\/p>\n

A3 – 3307 x 2338<\/p>\n

A2 – 4677 x 3307<\/p>\n

A1 – 6622 x 4677<\/p>\n

300 DPI (At your own risk)<\/strong><\/p>\n

A3 – 4960 x 3507<\/p>\n

A2 – 7015\u00a0x\u00a04960<\/p>\n

A1 – 9933\u00a0x 7015<\/p>\n

\n

 <\/p>\n

Quick Render Speedup \/ Memory troubleshoot tips<\/strong><\/p>\n

    \n
  1. Reduce resolution of final image<\/span><\/li>\n
  2. Lower the quality of the final render;\u00a0<\/span>there are some presets that can be loaded from the top of the Vray Options window:
    \n<\/span>General – Preview \/ Very Low \/ Low \/ Medium etc
    \n<\/span>(Start low and work up if the image quality is not adequate)<\/span><\/li>\n
  3. Override materials (see below): Global Switches\u00a0<\/span><\/li>\n<\/ol>\n

    Troubleshooting Rendering \/ Memory Crashes<\/strong><\/p>\n

    Often you can solve problems with render times and crashing jobs by being less pushy with your final images sizes. \u00a0Try at least rendering a lower resolution, and if you must then work your way higher.<\/p>\n

    Vray Settings : Rhino \/ Vray<\/strong><\/p>\n

    The following are recommendations from Chaos; the developers of Vray, for reducing excessive memory usage in Vray for Rhino and Sketchup<\/p>\n