Going to skip over my actual #1 (100mm macro) to go to #2 because it’s more versatile:
Pentax DA* 50-135 f/2.8 on APSC. It’s like a (comparatively) tiny 70-200 on FF. Also pretty sure it has a magical gremlin or possibly a gnome living inside who makes my photos look like some more competent photographer took them.
Going to skip over my actual #1 (100mm macro) to go to #2 because it’s more versatile:
Pentax DA* 50-135 f/2.8 on APSC. It’s like a (comparatively) tiny 70-200 on FF. Also pretty sure it has a magical gremlin or possibly a gnome living inside who makes my photos look like some more competent photographer took them.