>>3423755Don't bother upgrading anon, especially if you got the sonnar on a good deal.
I use an old contax sonnar mostly as a portrait lens at wide apertures, and as general purpose at smaller apertures where it sharpens up considerably.
If you don't use 50mm a lot, then it's not worth spending considerable money for a different 50. As I said, their obvious difference is in their character at wide open. If you shoot more architecture, you'll prefer the summilux. If you shoot more people, you'll prefer the sonnar. In most cases, you won't be able to tell which is which.
>the big thing is the focusing ring being so different from a 'lux to a Zeiss.Yeah, Leicas have the fingertip tab, Zeiss has the bump. The tab seems to work better for you. But if you use the Zeiss lenses more, you get used to the bump too.
>I can sell off the 28/35 and get a nice 50?Nah don't do that anon. By your own admission you use the 35mm the most, and it's a great lens, very fast and very versatile focal length. Can be used for portraits, street, landscape, pretty much everything. You say you usually crop the 35mm shits, but who says that you won't have to crop when using the 50mm? Maybe you just keep a distance when shooting, and with the 50mm you'd be tempted to keep more distance and still crop.
And anyway, you already have a good 50mm. Just use it. You won't see a remarkable difference just using a 50mm from another brand. If anything, I'd sell the 28mm and get a 21mm or wider. Going wider (or longer) will make an actual difference to your photos, much more than switching between designs for the same focal length.
Instead of spending more money on lenses, get some cheap filters, say yellow-red-green for contrast, experiment with ND's and long exposures, heck even try some infrared with a 720nm filter and some rollei infrared film. That can be fun, have a great impact on your photos and cost you next to nothing.
If you're hellbent on buying a lens, at least get something different.
