All were shot with Lumix DMC-GF1 + Contax G-Biogon 21mm modified to M-mount lens,
using jinfinace M->m4/3 adapter and tripod and of course used live view for focusing right.
I used Capture one version 5.01 PRO to develop GF1's raw outputs.

The second low (the first three) are shots with Sigma's circular fisheye 8mm F4 lens.
The second low (the last two) are shots with Contax G-Sonnar 90/2.8 lens.

I haven't tested G-Biogon 28/2.8, but G-Planar 35/2 and G-Planar 45/2 are OK.
for G-Planar 35/2 (see the last three) > http://www.pbase.com/kkawakami/g_planar_35mm_f2
for G-Planar 45/2 (see the last two) > http://www.pbase.com/kkawakami/g_planar_45mm_f2