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Wes James
Carpal Tunnel
   
Reged: 04/12/06
Posts: 2519
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Re: Vixen Foresta 7x50 porro
05/20/08 10:08 AM
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Quote:
Rechecked light beam transfer. Very well balanced, no tilt. However, shows the least area of 100% full beam of all 7x50s tested. Out of 15 different..., 10 show a wider area of the objective lens that projects a full 100% beam into the exit pupil. The Fujinon BFL 8x42 shows a full 100% beam transfered into the exit pupil from every position anywhere with the center 50% diameter of the objective lens. The Prostar shows a full beam from 30% of the center diameter. The average of all binoculars is 20%. Half of all the roofs show 0% to 10%. The Foresta shows only 5%.
EdZ- This is a confusing test (to me, at least). Can you amplify on what you're saying- or explain in different terms? It sounds like you're saying that up to 50% of the area of the objective is about the maximum of any bino's that transfer 100% of their light through to the exit pupil- all the way down to 0 to 5%? How can that be? Wes
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