@noel, IES are photomoetric data format. It has been widely used by many lighting manufacturers and is one of the industry standards in photometric data distribution. An IES file is basically the measurement of distribution of light (intensity) stored in ASCII format. You can think of it as a digital profile of a real world light. In 3d engine software like vraysu it can be used for creating lights with shapes and physically accurate form. While omni light is a point source of illumination that shoots out in all directions. The photometric data + intensity dictates the effect of light on any surface while omni doesnot rely on any data on its effect. i guess you try them and the clarity of the answer will be find by yourself when you use them.
hello sir,
i loved your work but i have been trying to load the vray in my google sketchup6 but i am not able to download and not able to find where to download it from so please please help me out and let me know from where do i have to load it from
thanking you
neha
There is no real cure for this, other than using an explicit wire texture map/material, some renderers like vray come with explicit materials/maps for this. Ther are other maps out like bytegheists edgemap or blurbetas wiretex. Most of them do not work with mental ray though.
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