Pancake lens Industar 69 28mm f/2.8 from soviet half-frame camera Chaika-2. With M39-NEX adapter. Industar 69 is modified – one little screw in front part and two screws in rear part are removed for infinity focus to work. There are other ways to modify this lens for infinity focus but I didn’t want to mess with it. Industar 69 is very cheap and not serious lens in fact, but I find it rendering very interesting images and will try it in street photography. Notice swirly bokeh similar to famous Helios 40.