The picture Quality of Nikon D40 is well but it could have been more better with some more lenses and focusing modes. It could have been very wonderful if it contained ultraHD DSLR mode.
Its quite easy to use but only hampers by size. If it would have little lower weight then it could be much better.
Money plays a very important role nowadays. So value of money is not upto the mark. If we can see the features, then it needs to be of little lowered price.
Shutter speed is ok but the capture needs to be much fast in this recent scenerio.
Battery life of it is 1000 mAh but if it would have been more than 1400 mAh then that would be much better. Its battery lowers too fast as compared to other cameras. So it needs some more modifications.