Tips & Tricks

Oprema Jena revives Biotar 58mm f/2.0 lens with 17 aperture blades: http://bit.ly/2yoMZql

Oprema Jena revives Biotar 58mm f/2.0 lens with 17 aperture blades: http://bit.ly/2yoMZql

DIY Photography
Oprema Jena revives Biotar 58mm f/2.0 lens with 17 aperture blades: http://bit.ly/2yoMZql