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Mount type | Canon EF | Canon EF | Nikon F | Four Thirds | Pentax KAF2 |
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Weight | 9.35 oz | 11.46 oz | 6.7 oz | 7.94 oz | 4.44 oz |
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Diameter | 2.83 in | 2.83 in | 2.52 in | 2.68 in | 2.56 in |
Length | 2.28 in | 2.07 in | 0.98 in | 1.61 in | 0.79 in |
Elements | 7 | 9 | 7 | 7 | 4 |
---|---|---|---|---|---|
Groups | 5 | 5 | 4 | 5 | 3 |