Pentax DA 12-24mm F4 Operating Guide

• The smc PENTAX-DA lens is an interchangeable lens specifically designed for digital

cameras. Its image circle is specialized for the image sensor (23.5 x 15.7mm) and its
optical system is optimized for the characteristics of digital images.

• When autofocusing is finished, it is possible to make fine adjustments by hand using the

“Quick-Shift Focus System” (see page 17 for details).

• Lenses that have “SDM” in their name are equipped with a supersonic motor. When

mounted on a camera that supports supersonic motors, the autofocus is quiet and
smooth.

• The following lenses are dust and water resistant because each part is individually

sealed. This makes it difficult for dust and water to enter inside the lens.
DA

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 300mm f/4ED [IF] SDM, DA

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 200mm f/2.8ED [IF] SDM, DA

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 16-50mm f/2.8ED AL

[IF] SDM, DA

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 50-135mm f/2.8ED [IF] SDM

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