Normally when I would press spacebar to preview an image, it would give me a full preview of it, like so: http://imgur.com/AeGvBix However now, it only gives me a very small version of the picture and a lot of wasted space: http://imgur.com/zZGqcsQ This does not happen with all images, ones which I have saved a while ago are still normal. Only ones which I have saved in the last two weeks or so have the above issue. I have tried googling but haven't been able to find a solution. I haven't run any updates, or installed any sort of software. I have compared the "get info" data of both an old and a newer image, all relevant information such as extensions is identical. Don't have any clue what to do here, must be an easy fix but I am just clueless.