Why are you using that resolution. It adds nothing and takes up a lot more memory. Why can't you scale your images to the correct size. The params you are using are not supported the last time I checked. But who knows what has changed with 7 ----Possibly imagecanvas is scaling down I don't know. But if you put a bitmap that size at 0,0 with the default roScreen resolution and your bitmap is larger it should just be clipped. You cannot fit that size bitmap without scaling it down. The nice thing about roScreen is that it will scale based upon the creation parameters and resolution of the display, but generally if you know you are dealing with a 1280 x720 and you want a full screen background then you create a 1280 x 720 bitmap. Usually anything larger may be used with a region to scroll certain sections of the bitmap in and out of the display area