Take a look a the following pictures, which are just a portion of a full screen image. The picture on the left was captured at 640x480 resolution. It is shown full size. The picture on the right was captured at 1280x1024 resolution and reduced to the same size as the picture on the left for comparison. It s pretty easy to see that there is a significant difference in the quality of the two images.
All pictures captured from the game have a certain amount of jagged edges on diagonal lines.
But the picture captured at the higher resolution has much less, because when you reduce it in size, the jaggedness is reduced considerably as well. The setup screens in TR2 and TR3 will allow you to experiment with your graphic settings to get the best quality. There is a disadvantage, of course, to using the higher resolution. Each picture you capture at 640x480 is 601kb for the full screen image. A vast difference.