If you saw/read my review of the TechArt TCZ-01 Adapter, you’ll have the main gist of what the Commlite CM-EF-NZ adapter does: it allows you to use your Canon EF glass on your Nikon Z camera. The Commlite adapter, in functionality, is nearly identical to the TechArt adapter. However, there are a few differences in the builds of these adapters.
The Commlite Adapter features it’s MicroUSB port (for firmware upgrades), in the adapter itself. The TechArt adapter MicroUSB port is attached to the lens dock (which is essentially the lens cap). In this regard, I find the Commlite solution better, as there’s always the possiblity of losing the lens cap and by extension, the ability to update the firmware.
The other major difference between the two is that the Commlite adapter features a built in tripod foot, similar to the foot that the Nikon FTZ adapter has. Unlike the FTZ adpater, the Commlite foot can be easily removed. I find that, while nice to have, I leave the tripod foot off most of the time. If I were adapting a heavier or larger lens (say the Canon 85mm 1.2 L), I could see the tripod foot being useful.
Performance wise, they were nearly identical. Both focused fast with the lenses I tested and either would be suitable to the task of adapting Canon glass to the Nikon Z bodies. Both captured EXIF data from the lens, but neither captured the lens brand name. For example, the Canon 50mm 1.8 STM lens just identified as a ’50mm f1.8′.
Between the two, I prefer the Commlite adapter over the TechArt. The MicroUSB port in the adapter vs. on the lens cap, and the removable tripod foot are advantages for the Commlite adapter. Additionally, the Commlite is $10 cheaper than the TechArt adapter. Either will get the job done, but the Commlite is my pick.