Monochrome DMK23G445 shown in MAX as 32-bit RGB

I have Monocrome Gigait ethernet camera DMK23G445.
When I press Grab in MAX under the image it shows it as 32-bit RGB camera(picture).
As a result I could not process it in my program as it requires 8-but mono picture.
Why MAX shows it like this? I have IMAQ-dx 4.0 drivers.

In attribute it shows as options only 10-12-14-16 bit.
The strange thing is tha in MAX it shows this camera in 2 places and currently only bottom one works(yesterday middleone worked as well but picture was very much distorted). Middle one yesterday showed picture as 8 bit, bottom one as in attached screenshot.
If you try to open camera in Vision Builder then in the list of IEEE1394 and ET cameras only middle camera is shown. I could not use it as it does not work...
Attachments:
1.JPG ‏151 KB

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Monochrome DMK23G445 shown in MAX as 32-bit RGB

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