HELIOS 44-2  SQUARE APERTURE MOD The modification of actual lens can offer a unique bokeh with square  shape of unfocused source of light as examples above.  Aperture was professionally modded, they create perfect square shape, the other square Helios 44-2 found on ebay have rounded square, please be aware of that. The photos of item is of actual lens so you can asses item condition, focusing is smooth, aperture ring turns easy, aperture preset mechanism works well barrel with using signs, front oprical element with light cleaning marks which will not affect the results. Comes with front plastic cap. Any questions please ask. The item will be carefully packed and shipped from Moldova, with tracking number. 15$ shipping to all available countries.