In this guide we are going to look at a term in photography. The popular swirly bokeh effect . It is also known as the Petzval effect or ...

 Helios 44-2 is a vintage Russian lens of the Soviet era with German roots. The lens and its variations is based on the Carl Zeiss Biotar l...

May 1945. German forces surrender. The Russians, as part of war reparations get the Carl Zeiss factory in Jena. The designs and equipment of...