I use a Variety of Light sources. Some I use as Check lights, some I use as Task Lighting. Some do a bit of both.
For example, i use the Metal Halide Flood lights as task lighting as it illuminates and also check lights as the power of these is perfect for showing up swirls. Now, what you hint at, polarised lighting, Metal halide is not. It only shows up swirls exactly where the reflection of the light source is. This has good and bad points. The good points being the power of the lighting shows up even "hidden" swirls lights like halogens might struggle to pick up. You might say the bad points are, sometimes its awkward to illuminate the area you want to.
Another light source I use purely as a check light is the 3M sun gun. This spreads its light energy quite well. I wouldn't call it a polarised light source but it spreads its beam far enough to pick up on buffer trails and holograms, plus with this light source, you can move it around as much as you wish.
I also use A single LED torch too.
There are some other lights i use too, but not worth a mention really.
With this array of lighting, Im quite confident i do not miss anything. I also never feel limited by my light set up in the unit. Id love to experiment with new light sources, i like to keep moving forward. But for the minute, im quite content with my light set up. Well, content enough to not think about experimenting with other types.
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