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Carey mask for Canon ET-83BII lens hood

por Fornjotr

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200mm f28 USM II L astrophotography canon Carey ET-83BII mask 200mm f28 USM II L astrophotography canon Carey ET-83BII mask 200mm f28 USM II L astrophotography canon Carey ET-83BII mask

Made a Carey mask for Canon 200mm f2.8 USM II L lens (with ET-83BII lens hood) as I prefer this mask diffraction pattern over Bahtinov’s.

Mask inner diameter is 107mm

http://www.geoastro.co.uk/careymask.htm

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