I only use manual lenses with my E-620 and it works great. I use Nikon, Oly and Ziess lenses with adapters. You need to set the camera setting to MF, set the dial to M for manual controls. The E620 happily provides metering support for manual lenses regardless of Make. You would need to adjust the aperture manually on the lens and the Shutter Speed from the camera dial. Of course, you have to focus using the manual ring on the lens as well. That's it.