I was excited to see this lens in production, but told myself that I would not get one. I lie to myself all the time, this lie lasted less than one day. I placed the order, the lens was Fed-Ex'd to me overnight. I suspect they wanted some feedback! The lens had a 10-day return policy, and has a two-year warranty.
j3plus_test by
fiftyonepointsix, on Flickr
Ran outside - the lens came just after the Blizzard...
Fence Post Test by
fiftyonepointsix, on Flickr
I've adjusted over 200 Jupiter-3's for Leica mount, and have corrected many, many problems in them. I've ground down mounts to get the helical to drive the RF to infinity, repositioned optics, used polishing sheets made for fiber-optic connectors to get rid of grinding in the focus mechanism.
This Jupiter-3+ was perfect. Smooth focus, no back-lash, no slop, no play. I've changed guide pins in the focus rails to correct problems, know where things go wrong. This is the first J-3 that I've used that I did not need to do something to make it work better. And the instructions tell you not to take it apart.
Wide-Open,
Manassas Battlefield J3+ by
fiftyonepointsix, on Flickr
At F4,
Manassas Battlefield J3+ by
fiftyonepointsix, on Flickr
Wide-open on the M9, I Emailed them that the lens would not be coming back.