Once again, I learn the same old lesson - the closer you shoot - the less the DOF . . . :
. . . and the other lesson: changing from a 1.7 crop camera to 1.5 crop gets you a bit less DOF anyway.
So, next time, I'll probably shoot the Sigma SD1M in HI res (4704px wide) from further away instead of LO (2336px wide) and then crop for composition.
Comments invited, of course. Doesn't really deserve any "likes" though . . .