Nice shots from your garden.
I am right behind you. A Sigma 105mm was waiting here upon my return today. These things are way cool.
The lens comes with two hoods, one for dx and one for the full frames. The hoods are each 2-1/8" long and can be stacked. There are 3 settings for the auto focus (full, 0.45m-infinity, and 0.312-0.45m), the 1:1 focus is 0.312. The optical stabilization has an off plus two other choices, I am thinking that I read it has one for tripod and one for hand held. The focus switch has auto and manual, during auto it can be over ridden by a twist of the adjustment ring. Really swell is that it takes just 100 degrees of twist from 1:1 to infinity.
Working distance without a hood attached are the same for dx and fx bodies. The distance with just the lens is 5-1/4", with a Raynox 150 it's 2-3/4", and with a Raynox 250 it's 2-1/4". Here are some quick shots to show the difference of dx and full frame using a metric ruler.
Full frame 1:1 - 22mm tall
Full frame 1:1 with Raynox 150 - 14mm tall
Full frame 1:1 with Raynox 250 - 11mm tall
DX 1:1 - 13.5mm tall
DX with Raynox 150 - 9mm tall
DX with Raynox 250 - 7.25mm tall