this term is subjective of course but i just want to get some opinions on the sharpness that i get from my canon EFS 18-135mm 3.5-5.6 lens. this is a screen grab of a photo i took this morning that i'm viewing at 100% in PS. is this considered sharp? (no pp sharpening done) this is a screen grab of the pic at 25%. i think this is pretty sharp, can L lenses produce even sharper images? just curious, thanks.