Quote - its true that in poser everything is smaller .if you load an object or a figure into blender its very very verry small.
for Zbrush they needed to make a script to scale it up. because you coudlnt use it inside.

We've discussed that before, though. The OBJ file format does not specify units and you can't embed them in any way to make it self-describing so it can be transported from one application to another.  Suppose you find a value in the file, for example 7.28. What does that mean? 7.28 feet, meters, millimeters, inches, miles, furlongs? There's no way to know.

Each application has to either just pick a unit, or has to ask you to specify how big you want the imported object to be. Poser did the latter, although the mechanism (percent of standard figure height) was a pretty stupid choice. If you do not enable import scaling, then the assumption is 1 OBJ unit = 1 Poser Native Unit = about 100 inches. Some applications standardized the OBJ unit = 1 meter, about 39 inches. I hardly think that the difference between 100 and 39 (a factor of about 2.5) is particularly scary to deal with.

Moreover, these unit choices don't affect anything in the render.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)