Because it has a thinner profile and greater focal length than My 65mpe, I sometimes mount a Rodagon 75mm macro lens on bellows and tubes to take advantage of available light. With cactus spines, you don't typically have to worry about the wind. Also, image registration in a focus stack is is very good using multi rail bellows units. Hope you enjoy the spines of this Echinocereus rigidissimus.
Irwin

