I've occasionally used my 100-400 IS II + 1.4x iii extender to shoot macro and it has worked rather well but its not really "macro". I just used my 50mm IS STM and some extension tubes last week to get truer macro images and now I'm hooked. Going to be taking a lot more macro shots and it's a nice change to my typical bird and wildlife photography.
Critiques are encouraged and appreciated...
Matt

Canon EOS R7 50mm f/11.0 1/250s 320 ISO 0.0 EV

Canon EOS R7 50mm f/11.0 1/250s 400 ISO 0.0 EV

Canon EOS R7 50mm f/8.0 1/250s 200 ISO 0.0 EV

Canon EOS R7 50mm f/8.0 1/250s 200 ISO 0.0 EV