ASKAR 80PHQ APO QUADRUPLET f/7.5 OSC filter 245 g each

SKU: 79590200943

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ASKAR 80PHQ APO QUADRUPLET f/7.5 OSC filter 245 g eachThe Askar 80PHQ is a professional apochromatic flatfield Petzval quadruplet with a focal ratio of f 7. 5 and a corrected field of 44mm in diameter. The Askar 80PHQ includes two Extra Low Dispersion glass elements for superb correction of chromatic aberration. Differently from standard ED refractors, the Askar 80PHQ features a Petzval design that does not require to set the sensor to a specific distance to the last lens. That leaves the freedom to use

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