As you might imagine these humble looking lenses belie bright and bold optical resolution -- resolution I had been looking for since my untimely 24-70mm f/2.8 (now returned, refund initiated, just waiting for funds to get back to my bank account). I rushed off to try them out as soon. The 50mm f/1.8 STM focuses faster than our copy of the 40mm f/2.8 STM and works like a low-light workhorse. It's not as bright as my f/1.2, but it's lighter, more compact, and gives up a neutral and accurate style. The 100mm f/2.8 focuses faster than the 50mm, and the images I'm getting out of this at f/2.8 wide-open at macro to short to medium distances are so sharp you could cut yourself on them. Stop it down to f/4 and you can get medium to long distances sharp as well. The tremendous focusing range easily makes the 100mm my favorite of the two, though I'd be remiss to devalue the 50mm so quickly since this can focus reasonably close as well. I admire and am grateful for both. I feel like I spent my money very well.
"[Growing up] is hard and nobody understands." // https://www.homestuck.com/story/2391