I was studying photoshop using video tutorial, but I noticed the differences of my photoshop workspace and one on the tutorial video. Images on my photoshop, even the brush cursor appeared as pixel images. The usual brush cursor is supposed to look like a smooth circle with a tiny cross in the centre right? but for mine, the edge is a combination of pixels(squares). Even the images. Although I opened up a HD image, it is still having pixel edges rather than smooth organic lines, and I haven't zoomed in or out at all. Is there something wrong with the setting of my photoshop program?