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Rounded aperture (F2.8-F5.6)
Diaphragm Control: Fully automatic
23-8.1° (when attached to PENTAX digital SLR cameras)
34.5-12.5° (when attached to PENTAX 35mm SLR cameras)
Approx. 1755g /61.9 oz.
With hood Approx. 1835g /64.7 oz.
With hood and tripod mount Approx. 2030g /71.6 oz.