Laowa by Venus Optics - With the 24mm probe, you can now take advantage of the 2:1 maximum magnification to reveal details that cannot be seen by naked eye. Few days left
Laowa 24mm f/14 2X Macro Probe in da house !!: Third Party Lens Talk Forum: Digital Photography Review
InfiniProbe TS-160 - Infinity Photo-Optical Company
Venus Optics Laowa 24mm f14 2X Macro Probe Lens Suitable for Canon Mount Cameras: Amazon.co.uk: Electronics & Photo