Originally posted by pres589 I'm aware. I'm using the aperture ring which does affect the blades. There's a difference in pictures taken at various f stops. I shot the house picture in auto just to let the body deal with iso and exposure. I can play more with it but responses here aren't encouraging.
The one with the kit lens at f11 is 1/100s, the one with the 28 is 1/2500, that 28 was wide open and not at f11 regardless of what the ring was set on. When not mounted you can turn the aperture ring and it will move the blades, but once you mount it the lens is held wide open with the aperture lever. In Av mode the camera is not going to release the aperture lever to allow the lens to stop down.
I can see this clearly in the EXIF, you were using Av mode, you can't use Av mode with that lens.
For f2.8 that doesn't look terrible, by f5.6 it should look pretty good.
EDIT: Looking again, even in M mode it is not going to work properly right now. That mount is non-conductive and not shorting the contacts of the camera mount. The camera think it is an M42 lens, it is not going to try to release the aperture lever. You need to short the contacts for it to work, either by adding some foil or removing the anodizing from the mount. It says "M42 or no lens" in the EXIF, it should say "K, M lens".