Mammillaria gracilis Flower

25 images, taken during November 2019, were focus stacked together to create this photo.
The technical information is as follows.
Camera - Canon EOS RP
Shutter speed - 0.5s
Aperture - f11.0
Lens - Canon EF 100mm f2.8 L IS USM Macro with Kenko 12mm, 20mm and 36mm Extension Tubes
Focal Length - 100mm
ISO - 100
30cm Silver Reflector
Tripod