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koji kawakami | profile | all galleries >> My Lenses >> CZJ/PENTACON Prakticars >> Lens Optical Design tree view | thumbnails | slideshow

Lens Optical Design | PB->EOS adapters | Prakticar 20mm F2.8 (Flektogon 20/2.8) | Prakticar 28mm F2.4 w Floating System | Prakticar 28mm F2.8 | Prakticar 35mm F2.4 (Flektogon 35/2.4) | Prakticar 50mm F1.4 First version | Prakticar 50mm F1.4 Second verison | Prakticar 50mm F1.8 (Pancolar 50/1.8) | Prakticar 50mm F1.8 Second version | Prakticar 50mm F1.8 Third version | Prakticar 50mm F2.4 Pancake | Prakticar 50mm F2.8 Tessar | Macro-Prakticar 55mm F2.8 | Prakticar 80mm F1.8 (Pancolar 80/1.8) | Prakticar 135mm F2.8 (Orestor 135/2.8) | Prakticar 135mm F3.5 Sonnar | Prakticar 200mm F2.8 | Prakticar 300mm F4 | Prakticar 500mm F5.6 (Orestegor 500/5.6) | Vario-Prakticar 35-70mm F2.7-3.5 | Vario-Prakticar 80-200mm F4

Lens Optical Design

The frange distance of Praktica bayonet mount is 44.4mm and its inner diameter of the mount is 38.5mm.
The unknown optical scheme is now only for the second version of Prakticar 50/1.4.
Prakticar 20/2.8
Prakticar 20/2.8		 Prakticar 28/2.4 with Floating System
Prakticar 28/2.4 with Floating System		 Prakticar 28/2.8
Prakticar 28/2.8		 Prakticar 35/2.4
Prakticar 35/2.4		 Prakticar 50/1.4(I)
Prakticar 50/1.4(I)		 Prakticar 50/1.8(I)
Prakticar 50/1.8(I)		 Prakticar 50/1.8(II,III)
Prakticar 50/1.8(II,III)
Prakticar 50/2.8
Prakticar 50/2.8		 Macro Prakticar 55/2.8
Macro Prakticar 55/2.8		 Prakticar 80/1.8
Prakticar 80/1.8		 Prakticar 135/2.8
Prakticar 135/2.8		 Prakticar 135/3.5
Prakticar 135/3.5		 Prakticar 200/2.8
Prakticar 200/2.8		 Prakticar 300/4
Prakticar 300/4
Prakticar 500/5.6
Prakticar 500/5.6		 Vario-Prakticar 35-70/2.7-3.5
Vario-Prakticar 35-70/2.7-3.5		 Vario Prakticar 80-200/4
Vario Prakticar 80-200/4		 Vario Elmar-R 80-200/4
Vario Elmar-R 80-200/4		 Vario Sonnar 80-200/4
Vario Sonnar 80-200/4		 Flektogon 25/4
Flektogon 25/4		 Orestegor 29/2.8 (M42 mount)
Orestegor 29/2.8 (M42 mount)
Pancolar 50/2 CZ Flexon?
Pancolar 50/2 CZ Flexon?		 Pancolar 50/1.8 1st version
Pancolar 50/1.8 1st version		 Pancolar 50/1.8 2nd version
Pancolar 50/1.8 2nd version		 Pancolar 55/1.4
Pancolar 55/1.4		 Biotar 75/1.5
Biotar 75/1.5		 Biotar 58/2
Biotar 58/2		 Ernostar type
Ernostar type

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