Filters; Precaution On Filters; Attaching The 30.5Mm Filter To The Da 40Mm F/2.8 Limited Lens - Pentax smc -DA INTERCHANGEABLE LENS Operating Manual

DA Lens_ENG.book Page 32 Monday, January 3, 2011 11:45 AM
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Make sure the filter size matches the lens, then screw the filter onto the front of the lens.
Memo:
• The compatible filter size for each lens is listed on pages 46-52.
• Filters cannot be mounted on the DA FISH-EYE 10-17mm f/3.5-4.5ED [IF].

Precaution on filters

• Since a filter becomes a part of the optical system when attached to the lens, handle it
with due care to protect it from dust, dirt and scratches. Normally, attaching two or more
filters on a lens does more harm than good. However, attaching a circular polarizing filter
and another filter is not a problem.
• When using a polarizing filter with a camera, use a circular polarizing filter for proper
exposure and autofocus.

Attaching the 30.5mm filter to the DA 40mm f/2.8 Limited lens

Normally, you attach the 49mm filter to the front of the lens. But you can also screw a
30.5mm filter to the back of the dedicated hood.

FILTERS