Upload & Sell: On
The internet is not good for containing one's excitement of all things new.
[personal voicing of opinions that might not apply to anyone else]
As of today, I've got a new shiny Speed Booster, a barely used NEX, and my happy family of Leica R lenses. Right now the battery is charging and I'm twiddling my thumbs and posting pointless comments to the internet. Such is modern life.
A few observations so far:
-The Speed Booster itself is a satisfyingly solid hunk of metal and glass.
-The optical cell was out of alignment upon arrival. This "precisely aligned at the factory" line is, to me, nonsense. If they do that, they're wasting their money because it doesn't stay put. The optical cell was so far out of alignment that the hold-in-place bolt was screwed in all the way and not holding anything down, leaving the optical cell free to shift about a few millimeters every time the housing was turned over.
-Once calibrated, however, it seems that there's plenty of room for the latest Elmarit 35 and Summicron 50, as well as the Vario-Elmar 21-35. The comments regarding the Elmarit 35 and Summicron 50 on GetDPI from Cunim are applicable to the first versions of both; and I'm convinced that FreakLikeMe's comments in this thread about having to shave his recent Elmarit 35 are so that he can make his minimum focal length shorter. (It is also possible that the housing has changed since he bought his.) Regardless: my Speed Booster has at least 10.5mm of room from the flange, which allows my (used but not apparently modified) Elmary, Summi, and Vario to reach infinity without modification.
-The E-mount side works as smoothly as an OEM lens. The R-mount side is frustratingly tight and doesn't have a stop, so you can turn it past where it should dismount but then locks into the next bayonet threads. Definitely not going to buy a straight Metabones adapter if there's another high quality option out there.
-Initial "run and gun" tests indicate that my opinion of its optics agree with everyone else out there. Which is to say that all the complaints above are totally worth the results.
It is a bright sunny day, I got this kit for nighttime shooting, and I still think I prefer film for ISO 100 situations. But I'm quite excited with my new kit. The large, variable-angle waist-level viewfinder is much more than merely tolerable. Once the battery is charged and the firmware is updated, I'll take more shots and probably learn some new things, both good and bad.
[/personal voicing of opinions that might not apply to anyone else]