Common mistake I see with HDRI and dome use is that the artist doesn't know how to get enough light out of the HDRI or JPG and then tries to compensate with extra point/spot/inf lights. That just makes the image look strange so the figures and props look they were photographed somewhere else and pasted onto a random background. Total lighting mismatch that makes my head explode. Here are four lighting examples with the same subject all using the Envirosphere and HDR images. A uses an indoor image that has zero direct light "in the center" of the HDRI. In other words no direct light should fall upon your subject. This one I set ambient level to 1 as the HDRI had enough level in it. I did have to rotate the dome so that the bright spot in the map was shining on the right side of her face. B the uses an overcast, outdoor HDRI. Again no direct light even though it is outdoors and daytime you don't want any harsh shadows. The dome ambient had to be set at 2.5 to get enough light onto the figure. C is typical outdoor daytime with sunlight. The way that Poser works with the dome is that it won't cast shadows or highlights unless you unclamp direct samples in the render settings. If this is done you'll get a pretty noisy image unless you use 100+ samples and I don't have the time to wait around for that. To get around that I'm using the dome for indirect light (leaving the clamping set to 10) and adding 1 infinite light. Again you might be tempted to add more lights to the scene because the figure is too dark. DON'T. Just crank up the ambient on the dome till the background looks natural for a sunny day and then crank up the “sun” to around 200. It'll be different for each situation and HDRI. If I'm trying to light the inside of a room with sunlight I might crank the inf light to 600 or more. In the last image, D, I left the nighttime image ambient set to 1 (way too dark for the figure) but added 1 large area light and blended it's color in to match the rest of the HDRI. It's also placed where a light in the HDRI is shining from so as to look as natural as I could get it.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740