@ RorrKonn - as I understand it, Spotlight in ZB is a projection tool, literally like shining a torch onto a surface. If you want to paint around corners without smearing, you have to constantly rotate the model.

An app that hasn't been mentioned is Allegorithmic's Substance Painter - it's not really suitable for Poser figures as it has no way of working with multiple UV maps, but it is still in beta so there is always a chance of that functionality in the future. It's also currently limited to 2k resolution (4k and 8k are planned according to the devs), but the big advantage is being able to paint multiple channels of your choice with a single brushstroke - eg. paint colour, height, specularity etc all at once from brushes, stencils or particle effects. It's got a ways to go yet, but worth being aware of IMO.

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