How do I clean my Petzval 58 lens?
Like most old Petzval lenses, the New Petzval 58 Bokeh Control Art Lens is constructed with a non-tightened air space for inserting the waterhouse aperture plates (3) between the rear lens element group (6) and front elements. For maintenance and cleaning, the rear lens element group (6) can be removed. To remove the rear lens element group (6), simply unscrew it.
(for the component numbering you can also refer to the user manual)
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