Poser Pro enables gamma correction by default.

Unfortunately, this will change a lot of things. They should not have enabled it by default. Many Poser materials are not set up for it.

Your transmap is being gamma corrected. This is not desirable, as the transparency information is a bunch of numbers, not a real "image" in the sense that you want to look at it. But Poser Pro doesn't know the difference between a data image and a visual image.

As a result, all the numbers are changed.

As hborre says, turn off gamma correction if you don't know how to deal with it, or don't want to.

However, it would be good to learn "Pro" techniques, since you have Poser Pro. Gamma correction (when used properly) makes a huge difference.

The right thing to do is to turn your lights lower, first of all, because everybody who ever used Poser before gamma correction had them too hot.

Second, you need to configure each transmap to use Gamma = 1.0 on it because it is not something that should be gamma corrected.

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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)