TIF format in QT. How to display normally?

Question

Qt

Good night friends!
There is an image in TIF format (Color depth - 16). I'm trying to display this image on the canvas using a label:

QLabel *label = new QLabel();
        label->setPixmap(fileName);
        label->show();

And nothing works. Just a black image. There are no problems with TIF24.
How can this problem be solved?