I have had problems with a zoom 25x250HR angenieux, and I need help to understand. When we zoom from 100mm to 250mm, at 3.5 Tstop, the border image become gloomy, only the center of the frame matain the corret exposure. Could you help me, to known what is happening? When we are in other position under 100mm, everything is ok... Thank you very much for your attention, regards, Leone.
angenieux 25x250mm HR problem
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