Sigma EX DC HSM 10-20mm 1:4-5.6. obiettivo zoom autofocus grandangolare per reflex Canon digitali. SIGMA 10-20mm 1:4-5.6 DC HSM EX. Focal length range: 10mm - 20mm [2X zoom ratio]. Speed range: F/4 @ 10mm - F/5.6 @ 20mm.
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