For the effect of skritshota: 1. Look at the middle of the line connecting the 2 images 2. Try to focus the point of view is not on screen, but on imaginary subjects being like the screen, and you'll notice that the images will begin to converge, as soon as they are compatible, wait a couple of seconds and the picture will get the scope and depth! 3. Due to different physiological characteristics of each eye, focusing can be difficult in the normal amount of images (pictures do not converge to the combination) that would achieve full convergence - reduces image size and all you get! Have a nice view)))