Ditto to Postworkshop. I think it would probably be more trouble than it was worth to try to accomplish that within Poser itself.

I did this book cover with a relatively simple render + Postworkshop. I selected it out of dozens of styles I applied to the same image in Postworkshop. Can't imagine doing that many renders even if Poser had the capability.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3