LADY'S-SLIPPER ORCHID, CHICAGO BOTANIC GARDEN, GLENCOE, ILLINOIS, MARCH 3, 2016
Tamron 90mm macro with 1.4x Pentax extender (126mm)
1/180 sec. f8 with off-camera flash
I somehow mis-set the ISO for this shot extraordinarily (and unnecessarily) high, but a little work with Lightroom saved the photo for Internet use. Also helping was my new Pentax electronic flash, which works through the lens with the camera settings to provide the right amount of illumination.