Neither Leitz nor any 3rd part ever made any extension tubes for M lenses, for obvious reasons . . well, the reasons aren't that obvious anymore - so I took a contraption I got some 25 years ago that allowed you to carry an extra lens underneath your Leica, cut off the mount part, glued it to a camera house cap and drilled out sufficiently in the center to let a full frame get through. Primitive, and I prefer to hold on to the Noct . . but it gets me some interesting macro shots . . at 0,95

I set out a tripod in the ice cave I spotted high on the slope above Thompson Lake. Although the interior looked interesting I wanted to include outside view in the image. After metering both outside and inside I realized I'm not going to have detail in both. So I decided on 2 perfect exposure shots , one in, one out, with the same f-stop, varying exposure time only. Later I combined them in PS.