PENTAX 645D medium-format digital SLR camera body, this
ultra-wide-angle lens offers a focal length of approximately 19.5mm in the 35mm
format, providing the widest perspective of all the lenses compatible with the
PENTAX 645D. Creating visual effects unique to ultra-wide-angle lenses, such as
exaggerated perspective and extra-wide depth of field, it can be effectively
used for a wide range of subjects and situations, including spectacular landscapes
and indoor shooting within a confined space. This lens gives the PENTAX 645D
greater photographic freedom and flexibility.
2. State-of-the-art optics
Incorporating two high-performance a-spherical optical
elements within its optics, this ultra-wide-angle lens provides exceptional
image-resolving power with outstanding brightness levels even at the edges,
whilst keeping any aberrations to a minimum. All lens characteristics are optimized
for digital photography, for instance - exclusive lens coatings are applied to
optical elements, while anti-reflection materials are applied to the interior
of the lens barrel. The result is a lens that brings out the full potential of
the PENTAX 645D medium-format digital SLR camera.
3. Aero Bright Coating to dramatically improve transmittance
This lens is treated with a PENTAX-original Aero Bright
Coating, which ensures outstanding anti-reflection performance over a broader
wavelength range to deliver images that are brighter and of higher quality.
Created using PENTAX PENTAX advanced nanotechnology, this exclusive coating reduces
lens reflections and greatly improves light transmittance by forming a silica aero
gel layer with uniform pores on the surface of the optical elements.
4. Dependable dustproof, weather-resistant construction
As the newest model of the dependable AW (All Weather)
series, the lens comes in a highly dependable dustproof, weather-resistant
construction with 11 special seals to effectively prevent the intrusion of dust
and water into the lens interior. By coupling this lens with the PENTAX 645D
camera body, the user is assured of a durable, reliable digital imaging system
that performs superbly in demanding outdoor settings — even in rain and mist,
or locations prone to water splashes or spray.
5. Mountable circular polarizing filter
The lens features a built-in, pull-out-type filter holder in
its barrel. By placing the C-PL (circular polarizing) filter (40.5mm in
diameter; included as an exclusive accessory) on this holder, the user can
easily rotate the filter to obtain the desired polarizing effect.
6. Smooth, quiet SDM autofocus operation
The advanced SDM (Supersonic Direct-drive Motor) autofocus
mechanism has a supersonic motor installed inside the lens barrel which ensures
a smooth, quiet autofocus operation.
7. Other features
• High-quality
machined aluminum parts, including the lens barrel, hood and cap
• The built-in lens
hood is optimally shaped for the angle of view when the lens is mounted on the
PENTAX 645D camera body
• Quick-Shift Focus
system for instant switching to manual-focus operation, after the subject is
captured in focus by the AF system
• Rounded diaphragm
to produce a smooth, beautiful “booked” (out-of-focus rendition), while minimizing
the streaking effect of point light sources
• SP (Special
Protect) coating applied to the front surface of the lens to effectively repel
dust, water and grease
