So, testing...
Sigma fp, Vivitar 28/2.5 (Kiron) (here's a forum option I want to see, photo captions... also, see the photo when you attach it, instead of needing to preview?)
I like how this one came out; I like the framing better on the next one, but there's a rainbow artifact and I'm not sure where it came from:
Could be flare, but I was testing a new lens hood, so it seems less likely?