MA 88 Digital Camera

[roop5]

Hello,
I'm a newbie with a very scant knowledge of computers etc. However, I have just bought from a German dealer on the internet a digital camera MA 88 which plugs into the eyepiece of my microscope. I got it installed OK using the CD supplied which says it is Photo Eplorer version 7.0. Mypc runs Windows XP Pro. If I get an image focussed in the eyepiece and then substitute the camera the image that appears on the PC is not the same---it is only a small part of the central area amd much magnified. I expected the optical and digital images to be more or less the same as regards area and content. Am I correct in this? Are there settings to get the two to coincide? Have I got a duff camera? Any help/comments would be most welcome.