Ernemann Anastigmat Ernostar 2,7/ 15cm

 Ernostar was designed by Ludwig Bertele in 1923-24, who later also designed Sonnar in approx. 1930 and Biogon in 1935

this is the design of original Ernostar from wikipedia

Possibly from Zeiss Ikon's Klapp miniature or Ermanox camera.

from http://www.collection-appareils.fr/x/html/page_standard_eng.php?id_appareil=20214

I use Lens turbo+NEX at maybe F4 or 5,6. looks nice with lens turbo, sharpness at edges

 All other shots are wide open

Vivitar 24/2 MC

It has 28 first serial number, so it's made by Komine.
I got it in Canon FD mount, so I cannot use it in lens turbo yet.
Looks decent performer.
soft at infinity at wide open, but very usable.
Compared to Vivitar 28/2,5 made by Kiron, it has smaller size and lighter. despite of it has faster aperture.
filter ring is 52mm, while 28/2,5 one is 67mm.

f5,6

f2

f11

fully closed aperture

LZK Polkinar 120/1,8

 LZK Polkinar 120/1,8 is a Petzval design made in Polland projector lens.

Soft at wide open

stop down with paper card

comparison with and without paper card

wide open

with paper card

nex5+lensturbo

crop from above