Hi Stephan,
Almost all commercial CMOS sensors can work with our electronics. Mainly you want to try and find a sensor with parallel out, frame valid and line valid signals, a pixel clock between 25MHz and 100MHz, and ideally i2c communication. Some good places to look for CMOS sensors is OnSemiconductor and E2V. We have gotten the OnSemiconductor MT9M001 running really well which is a +1MPixel sensor. We are now working on getting an E2V Jade sensor up and running.