A second brand-new sample arrived about 10 days ago, and I have now largely finished my review in DAP, adding several new pages include examples. The second 100/2.8L sample was a huge improvement over the first, but not free of issues, which I document. Direct link for subscribers.
I’ve included a comparison to the original Canon EF 100/2.8 macro. There’s simply no question that the new design is a huge step forward. You can get the 100/2.8L for about $1049 .