This scene is 165mm x 65mm (5 1/2" x 2 1/2'), I use the Panasonic GH1 and my Nikon 200 f4 macro on my diy focus stacking rig, the scene gets placed on a horizantal and vertical traveling rig and the camera is is on another rig that moves back and forth for the focus stacking.
It's all controlled by a Teensy 3.6 and programmed in Arduino.
I use a ir remote to change the basic settings.
The camera captures 17.3mm x 13mm for each frame, less with the 25% overlap, this scene would have been around 5 x 12 or sixty frames. Final image size is 31,956 x 14,265, 3.18gb Tiff.
There more for printing since they have to be down sized so much for internet viewing, this one would print at 360dpi 40"x 89", 1m x 2.25m.
The flower buds are all from my pollinator garden, there's Sunflower, Tropical Milkweed, Rudbeckia, Blanket Flower, Joe Pye Weed, Bee Balm, Scabiosa, Agastache, Crocosmia seed pods, Little acorns from our tiny oak tree, Cosmos.