If a stock photo needs to be resized what is the preferred way to do it? Buy a smaller dimensional size and resize it from that, or buy a larger dimensional size and resize it from the larger one. For example if I need an image at 500x331 and the two nearest in size to purchase are: 426x282 851x564
Get the bigger one. If you try to make a smaller size bigger, it could become distorted or pixilated.