I've noticed that shooting 1600 on my E-P1 with the 20mm Panny allows for what I consider sharp enough images. You might not want to blow them up to poster size, but they look good on my screen at 8x10 size. Other than having a fast lens, what tips, if any, can you give for keeping the images reasonably sharp at higher ISOs? I understand that the inherent noise will necessarily soften the image, but am wondering if folks get good results bumping the EV value, using slower shutter speeds, etc.?