Received this scanner very quickly from Germany installed the Arcsoft software on my XP pro PC but had an authorisation problem with a .dll file not installing as a result software would not acquire the scanner. Complex to resolve. Tried on my Windows 7 laptop no problem was up & running in minutes. Scanned a mixture of colour slides, B & W Slides, Colour & B&W negatives. The scans are generally good but illumination is uneven with fall off to the edges & corners. This may be a fault & I am in contact with suppliers & manufacturers in Germany to resolve the problem. I will update my review when problem is resolved.