Dotix

Hi There: This is not a bug. IP Megapixel cameras can use different sensors and processors like Aptina (that's the case of Dahua) or Sony ExMor per example.Each CMOS sensor has it's original - and best - resolution, the native resolution. The way each sensor handle the downgrade on resolution WITHOUT "PIXELIZATION" ON THE IMAGE is different. I saw some cameras that has full image on 2MP, crop image on 1.3 and do not crop image in D1. It's a limitation on the sensor and I think Dahua cannot do anything about it. By the way, some DVRs (yes, analog cameras) also crop image when you compare brands - Check different brands and pay attention how different they are. Just think in what-you-pay-what-you-get and sincerely this is a very good camera with good features, resolution for it's price.