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Author Topic: What is the difference between those two Rodenstock lenses?  (Read 950 times)
sbernthal
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« on: May 20, 2013, 12:32:16 PM »
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Does anyone know what's the difference between those two lenses:

Rodenstock 100mm f5.6 Apo Sironar-N
Rodenstock 100mm f5.6 Apo Sironar-S

I've tried googling, there's not a lot of information on the N, but there are plenty for sale.

I'm specifically interested in the image circle and recommended aperture range.
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heinrichvoelkel
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« Reply #1 on: July 01, 2013, 01:54:10 AM »
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the S has a 155mm image circle and can use 49 mm filters, compared to to the N with a 151mm image circle and a 40mm filter thread. the S is supposed to be sharper.
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