Best manual lens I've ever owned. Wouldn't use it inside though, might work better with my Magsphere. Also, I probably need to remove my grip, but that won't happen, I love my grip on my camera. I'm not removing and putting it back on all the time. Grip makes one handed shooting easy.
It's in stock from B&H. I bought before they had it in stock, from Kenmore Camera on eBay. Kenmore Camera ships stuff properly, non like Adorama. It was stuffed in a box with peanuts. Adorama ships lenses, in an unpadded envelope.
The focus ring didn't break like the Meike lens I bought did. I'll never buy a lens from Meike or Adorama again.
Just set the focus to infinity. No focusing needed.
What are those little white dots? From the flash? Well, it's semi useless for interior pictures then.
Pictures I believe were f5.6. I only use it at the lowest aperture, that would be f2.8, if I want bokeh.
Good luck defishing it. At least with digiKam.
Should go outside someday, and take pictures. Is probably better outside, you don't need a flash.