It did not come in the shutter it is in. Fit is OK but if you screw the rear group all the way home it impacts the aperture blades. Aperture blades not perfectly round.
This will cover 6 1/2 X 8 1/2 plate but not 8X10. Shutter is running good at all speeds. This is the only one of these I've ever seen. Lots of 6 1/2" ones but this 6" is odd. Still a very sharp lens. $289