Shape the bokeh of your images with the lomography petzval 58 bokeh control art lens which features a new bokeh control ring allowing you to alter the distance between the lens elements control the strength of petzvals distinctive swirly defocused areas keep the effect minimal on level one or dial it right up to level seven the lens also boasts a fast f19 maximum aperture that allows you to gather plenty of light even with fast shutter speeds making the petzval 58 ideal for outdoor port