Photomorgana
New member
What is the different between Speed Panchro and Deep Field Panchro ?
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100mm Deep Field Panchro was build in 1940s and it had the best bokeh at that time. It was widely preferred by most Directors, so the decision was made not to change the design. (while 32mm 40mm 50mm 75mm Speed Panchro had improved series II, and 18mm and 25mm even had series III, the DFP remained virtually unchanged) I think the only thing that changed in DFP lenses was a coating. It was Double Gause design 6 elements 4 groups. Early version was f2.5 T3.2 and late was f2.5 T2.8, (a minor detail I believe a barrel material was changed), I have both and both are good.
100mm Tele Panchro or Panchrotal (not Speed Panchro, I think ''Speed'' could only be used on lenses with f2 opening) was manufactured later and had different design- 6 elements 3 groups. Aslo an excellent lens. Older version was f2.5 T2.8 and later version was f2.3 T2.5 (used in both 16 and 35mm cinematography)
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100mm Deep Field Panchro was build in 1940s and it had the best bokeh at that time. It was widely preferred by most Directors, so the decision was made not to change the design. (while 32mm 40mm 50mm 75mm Speed Panchro had improved series II, and 18mm and 25mm even had series III, the DFP remained virtually unchanged) I think the only thing that changed in DFP lenses was a coating. It was Double Gause design 6 elements 4 groups. Early version was f2.5 T3.2 and late was f2.5 T2.8, (a minor detail I believe a barrel material was changed), I have both and both are good.
100mm Tele Panchro or Panchrotal (not Speed Panchro, I think ''Speed'' could only be used on lenses with f2 opening) was manufactured later and had different design- 6 elements 3 groups. Aslo an excellent lens. Older version was f2.5 T2.8 and later version was f2.3 T2.5 (used in both 16 and 35mm cinematography)
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