Dr. P. Rudolph Kleinbild-Plasmat Sechslinsig 70mm f/2.7 (Sold)
| Company | Hugo Meyer Optik Görlitz |
| Country | Germany |
| Decade | 1930s |
| Type | Rangefinder lens |
| Focal length | 70mm |
| Aperture | f/2.7 |
| Mount | Unknown |
| Coverage | 4.5x6 cm |
| Inventor | Dr. Paul Rudolph D.R.P. DE 572 222 |
| Optics |  |
Did you use a hood when taking these? Shutting out extraneous light transforms the results from folding camera shutter – lenses (which are, of course, uncoated and highly susceptible to flare. The brand to look for is ‘Black Cross’, made in a range of diameters to simply clip onto the front bezel of your lens, they are excellent and fairly available. Failing a hood, hold a flat shade of some sort (I use a kitchen chopping board) in front of the lens to stop direct light hitting it. Just hold it sufficiently clear to shade the sun but not so that it is in the field of view.