mine's a 2003 300D. even lower end than your 10D.which model u using huh... mine is a 2003 10D... my sharpest setting is only +2... i only got 4 setting to play with, all is up to +2 steps only... i tried all those le... i can live with my daily shots.. just that i now trying to figure out the macro len... really miles off the pic posted... hope to learn from you more ley... cheers
dont bother too much about the +1/+2 settings. they don't matter much. practice your technique and master your camera.