Coming with different users target, the Benq C740i and C820 have the same 2.5-inch display screen and the same 3x optical zoom. But the new Benq C740i aimed to fill the needs of the semi professional photographer which want more control. It is true that the control powerfulness nothing compare to SLR camera, but it should be enough for some of you. It does have aperture control and ISO 1600 ready. On the otherside, the C820 is designed for entry users which usually want easy to use camera with extra features such as easy to print. No words yet about the pricing of these cameras.