All shots 5D mark ii (is it sad that I still get a thrill thinking of what a great camera I have?) 100mm macro lens.
f/7.1 ss 1/100 ISO 250
f/2.8, ss 1/200, ISO 100
It was surprisingly hard to not blow out the red channel on these, I never really thought of that with yellow flowers but it made a big difference in the details that showed up in the texture of the petals.