I stacked the lens with the MMF-1 adapter, EC-14 teleconverter and the MF-1 adapter.
The handling is quite awkward. With such a long focal length, at 280mm, any shake is magnified. It's good thing that the In-body Image Stabilization supports manual lenses. I fed in the 300mm focal length (the closest equivalent) into the IS entry, and the lens is stabilized. Framing is much easier as the image jerking is reduced.
This is a shot of a satellite dish 20 feet above ground. I was about 20 feet away, thus estimating the total distance at about 30 feet.
280mm, f11, 1/800s, ISO100, -0.3EV
This is great for birding and motorsports!