No. of diaphragm blades:

9 pcs. (rounded)

Diaphragm:

Fully automatic

Aperture range:

f/2.8 – 22

Exposure measurement:

Via full-aperture method

En Dimensions:

Approx. 98mm dia. x 131.5mm extension from the

Weight:

camera’s lens mount flange

Approx. 1,000g (35.3 oz)

Specifications and designs are subject to change without any notice or obligation on the part of the manufacturer.

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Nikon 2163, 4920 instruction manual Diaphragm, Aperture range, En Dimensions, Weight