King Regula Rangefinder Lenses
The King Regula bayonet lens mount was introduced in 1956 for the King Regula IIIc and King Regula IIId rangefinder camera models. The mount was also used on the King Regula IIId Automatic, King Regula Super and King Regula Super Automatic rangefinder cameras.
A small range of lenses were made for the mount by the German lens makers, Enna, Isco and Steinheil in 28mm, 35mm, 50mm, 90mm and 135mm focal lengths. All lenses use a 45.5mm x 0.5mm (thread pitch) filter thread type for its filters, this thread seems to be unique to these lenses and makes filters for them quite rare and hard to find, known makers of these filters are BDB and Braun.
Wide Angle Lenses
Enna Ultra Lithagon 28mm f/3.5
- Six elements, six groups lens design.
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| image by camerawiki (Image rights) |
Enna Regula Lithagon 35mm f/3.5
- Four elements, three groups, Tessar design.
- Seven bladed aperture, heptagon shape.
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| image by camerawiki (Image rights) |
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| King Regula IIId Automatic + 35mm Lithagon lens image by Morinaka. (Image rights) |
Isco Regula Westron 35mm f/3.5
"Normal" Lenses
Enna Regula Ennalyt 50mm f/1.9
Enna Regula Ennit 50mm f/2.8
- Four elements, three groups, Tessar design.
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| image by camerawiki (Image rights) |
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| King Regula IIId + 50mm Ennit lens image by Morinaka. (Image rights) |
Isco Color Westagon 50mm f/1.9
- Five bladed aperture, pentagon shape.
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| Regula Super + Westagon 50mm f/1.9 lens image by Morinaka. (Image rights) |
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| Regula Super + Westagon 50mm f/1.9 lens image by Morinaka. (Image rights) |
Isco Color Westanar 50mm f/2.8
- Three elements, three groups, "Pancake" Anastigmat triplet design
- Five bladed aperture, pentagon shape.
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| image by camerawiki (Image rights) |
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| King Regula IIIc + 50mm Westanar lens image by Morinaka. (Image rights) |
Steinheil Regula Quinon 50mm f/1.9
- Five bladed aperture, pentagon shape.
- Mechanically-moved depth-of-field pointers
- Green ring graduated in flash guide numbers, this is set against a film speed scale and allows reading off of apertures along the distance ring.
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| Regula Super + 50mm Quinon lens image by Morinaka. (Image rights) |
Steinheil Regula Culminar 50mm f/2.8
- Four elements, three groups, Tessar design.
- Mechanically-moved depth-of-field pointers
- Green ring graduated in flash guide numbers, this is set against a film speed scale and allows reading off of apertures along the distance ring.
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| image by camerawiki (Image rights) |
Long Focus Lenses
Isco Color Westanar 90mm f/3.5
Isco Regula Tele Westanar 135mm f/3.5
- Five bladed aperture, pentagon shape.
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| Regula Super + Westanar 135mm f/3.5 lens image by Morinaka. (Image rights) |
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| Regula Super + Westanar 135mm f/3.5 lens image by Morinaka. (Image rights) |
Enna Regula Ennalyt 90mm f/3.5
- Four elements, four groups.
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| image by camerawiki (Image rights) |
Enna Regula Ennalyt 135mm f/3.5
- Five elements, four groups.
- Seven bladed aperture, heptagon shape.
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| image by camerawiki (Image rights) |
