The Online Photographer Outside price and quality of pics, this was his biggest complaint: "Olympus's implementation of this ( = manual focus) has three big problems: The focusing ring focuses well past infinity. The end stop is at about +ƒ/4 (I'm using the depth of field marks as indicators). You can't blindly set the lens to infinity, or you'll actually be focused well beyond infinity. This kind of slop is often needed with telephoto lenses to allow for thermal expansion, but that shouldn't be an issue with a 12mm lens. If you align the infinity mark with the focus line, you're still not in focus at infinity. True infinity focus is when the infinity mark is at about –ƒ/2.8. Consequently, scale focusing isn't going to be very accurate. When you focus in this full manual mode you don't get continuous focusing, as you do in normal manual focusing where the ring free-wheels. The manual ring only provides coarse zone focusing. Focus snaps from zone to zone abruptly; the separation between zones is about the same as the separation between the focus line and the ƒ/5.6 mark. That huge jump makes it impossible to achieve either precise or accurate focus."