The Laowa 65mm f/2.8 Ultra Macro APO for X-mount is currently discounted at B&H Photo. Optical limits rated this lens well “Outstanding Sharpness and Affordable 2:1 Macro With No Trickery.”
Venus Optics Laowa 65mm f/2.8 2X Macro:
Venus Optics/ B&H Photo / Amazon / Adorama