CompuServe Messages

Depends on what you are doing with your final output. 100% is really only a best quality compression. JPEG does support a lossless saving, but I don't think I've ever seen that implemented. 100% JPEG images look darned good in most circumstances. There will be image degredation and artefacting. If you are just creating images for display on a monitor or some other straight use of the JPEG, then you are probably fine using it. If you expect to be doing further image manipulations, you may not be OK. Repeated JPEG saves will degrade the image to the point where you notice. Certain image enhancement operations can highlight the JPEG 8×8 pixel grid and other artefacting. But at 100% you might be quite OK. The best way, is to run a couple of tests. JPEG is much better at photo type images than at flat color and line cartoon like images. If you change your rendering type/look, then run your tests again. Note also that one of the first things you may notice in a JPEG image is not edge artefacting, but a change in color. – gruhn