The goal was that the preview images should have more or less the same brightness. We then calculated this scene automatically for each IES file using python. After this process, there was "only" 160'000 data left.Īfter that we created a scene in Blender, where a light source hangs 5cm in front of a wall and 1m above the floor.
Using python we read the data, hashed the content as MD5 and assigned the data to the individual manufacturers. We have enriched existing IES collections with manufacturer data and have reached almost 200'000 data in the end. However, it is cumbersome to find the correct file using try and error, as the manufacturer does not necessarily include a visual example.įor this reason this page was created.
This data is provided by many manufacturers so that lighting designers can realistically simulate how a project will look when a specific light source is used.ģD artists also use this data to calculate their images more realistically.
With all the problems above, why would you even consider using IES lights at all? Well, the answer is simple - they look much better than any other spot lamp and it happens that by using some simple tricks, you can create your own IES lights inside Blender! Using Chocofur IES lights.IES files describe how light from a lamp is distributed in a room. On top of that, fourth - IES light profiles are rather poorly supported by Blender. Third issue - lots of pre-made IES light profiles significantly increase render times as usually they're not properly optimized for 3D applications. A light imported from one manufacturer may operate on completely different units than light coming from the other source. A few lamp manufacturing companies share various IES profiles available through their websites but that leads us to the second issue - lack of standardization. First - you need to import them to every 3D application as IES light profiles which have to be created in external software. IES lights are most widely used in architectural visualizations but by default they have some usability flaws.
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