RICOH HD DA 55-300 User Manual

A compact, lightweight standard zoom lens
for use with PENTAX K-mount digital SLR cameras

• Short minimum focusing distance of 0.95m

• KAF4 is PENTAX’s fi rst K-mount with electromagnetic diaphragm control

system for a quiet sound operation during movie recording

• Rear focus system and PLM (pulse motor), direct drive lead screw system for

a High-speed AF

• Compact telephoto zoom lens thanks to its collapsible structure

• Weather-resistant construction

• ED lens elements for brilliant sharpness and saturated colours

• HD coating to optimize light transmittance and minimize refl ection

• Quick-Shift Focus System to instantly change the AF mode to MF by twisting

the focus ring

• SP (Super Protect) Coating applied to the front surface of the lens to

effectively repel water and grease

• Rounded diaphragm to produce a beautiful bokeh

HD PENTAX-DA

55-300MM F4.5-6.3 ED PLM WR RE

Art. Code EAN

HD PENTAX-DA 55-300mm
F4.5-6.3 ED PLM WR RE

INCLUDED ACCESSORIES

LENS HOOD PH-RBK 58 - 38424
PENTAX LENS CAP O-LC58 - 31523
LENS MOUNT CAP K - 31006

OPTIONAL ACCESSORIES

21277 027075296640

LENS SOFT CASE S80-120 - 33924PENTAX LENS PEN - 50166

Focal Length 55-300mm

(in 35mm format equivalent) 84.5-460mm

Maximum Aperture F4.5-6.3

Minimum Aperture F22-32

Lens Construction 14 elements in 11 groups

Angle of View (Diagonal) 29-5.4°

(when attached to PENTAX APS-C size DSLR cameras)

Mount KAF4

Minimum Focusing Distance 0.95m (3.1ft.)

Maximum Magnifi cation 0.30x

Filter Diameter 58mm

Diaphragm Control Electromagnetic diaphragm

Fully automatic

Number of Diaphragm Blades 9

Rounded diaphragm (55mm: F4.5-9 300mm: F6.3-13)

Lens Hood PH-RBK58 (included)

Lens Cap O-LC58 (included)

Lens Case S80-120 (optional)

Maximum Diameter x Length approx. 76.5mm x 89mm (approx. 3in. x 3.5in.)

Weight approx. 442g / with hood approx. 471g

(approx. 15.6 oz./ with hood approx. 16.6oz.)

Temperature -10°C-40°C (14°F-104°F)

Humidity 85% or less (no condensation)

Weatherproof design

ED Glass (Extra-low Dispersion)

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HD PENTAX-DA

55-300MM F4.5-6.3 ED PLM WR RE

RICOH IMAGING COMPANY, LTD. is pleased to announce the launch of the HD PENTAX-DA 55-300mm F4.5-6.3 ED PLM
WR RE. Developed as an interchangeable lens for use with PENTAX K-mount digital SLR cameras, this new compact,
weather-resistant telephoto zoom lens provides enhanced autofocus performance and outstanding optical performance.

This zoom lens provides focal lengths between 84.5mm and 460mm (in the 35mm format)* to cover medium- to super­telephoto ranges. Thanks to its upgraded AF performance, it assures quiet, high-speed AF operation in still-image shooting,
as well as smooth AF tracking operation during movie recording to minimize operation noise caused by focus and aperture
shifts. Its newly designed, high-quality optics provide a minimum focusing distance of 0.95 meters, expanding the range of
photographic applications. With the adoption of a retractable structure, it measures a mere 89 millimeters in length, making
it easy to carry around. Coupled with its weather-resistant construction, this zoom lens assures outstanding reliability and
durability even in demanding shooting conditions.

* When mounted on a PENTAX APS-C-format digital SLR camera.

Main Features

High-speed AF operation

With the adoption of a rear-focus system, the focusing
lens is 93.6 percent lighter* than the previous version. By
driving this focusing lens using a pulse motor (PLM), which
is directly linked to a lead screw, this zoom lens operates
faster — approximately 8.3 times** at its wide-angle end and
approximately 1.7 times** at its telephoto end —and quieter
than the existing model.* When mounted on the new PENTAX
K-70 digital SLR camera body (scheduled to be launched
in June, 2016), it assures smoother, faster AF operation
with dimly lit subjects, thanks to an improved AF algorithm
that exchanges AF data between the camera body and the
lens with greater precision. Operability of its power-assisted
focus system during manual-focus operation has also been
improved. Since its distance ring is designed to accurately
detect the angle of rotation and swiftly react to a change of
angle, this zoom lens can shift its focusing lens smoothly in

response to distance ring operation.

* When compared with the HD PENTAX-DA 55-300mm F4-5.8ED WR.
** When taking a still image in viewfi nder shooting, with the camera’s AF mode set to AF-S and
for subjects positioned at a distance between 1.5 meters to infi nity.

Quiet AF operation and electromagnetic
diaphragm control, perfect for movie
recording

This is the fi rst K-mount lens to feature an electromagnetic
diaphragm control system.* When mounted on the new
PENTAX K-70 digital SLR camera body, it assures smooth,
high-precision aperture control during movie recording.
Thanks to this state-of-the-art system, it shifts the aperture
setting automatically and smoothly, even when the brightness
level of the subject changes drastically in movie shooting.
Coupled with the PLM mechanism, it also assures smooth
AF tracking operation and exposure control, while minimizing
the intrusion of focus- and aperture-shift noises during movie­recording operation. As the result, it produces more natural,
true-to-life movies in locations such as a theater stage or a
sunlight-streaked forest where the brightness level fl uctuates
considerably, and for such active subjects as athletes and
animals.

High-quality images, with a minimum focusing
distance of 0.95 meters

With focal lengths from 84.5mm to 460mm (in the 35mm
format), this telephoto zoom lens provides approximately

5.5-times zoom coverage from medium- to super-telephoto
ranges. Its 14-element, 11-group optics include an ED (Extra­low Dispersion) optical element to effectively minimize spherical
and chromatic aberrations, while delivering high-resolution,
fi ne-detailed images with rich contrast from the image’s center
to its edges and minimal color bleeding at any focal length
setting. In addition to the short minimal focusing distance of

0.95 meters, made possible by the rear-focus system, the lens
barrel has also been designed to be free of extension during
AF operation, making it ideal for a wide variety of applications,
such as outdoor, sports and landscape shooting.

Compact telephoto zoom lens

Thanks to its collapsible structure, the lens is only 89 millimeters
long. Since it weighs just 442 grams, it is extremely compact
and handy to carry even in a limited space, such as a bag,
making it ideal for casual, day-to-day shooting.

Weather-resistant construction

The lens features a dependable weather-resistant construction
with 11 sealing parts to effectively prevent the intrusion of water
into the lens interior. When paired with a weather-resistant
PENTAX digital SLR camera body, it creates a durable,
dependable digital imaging system that performs superbly
in demanding shooting settings — even in rain or mist, or in
locations prone to water splashing or spray.

HD Coating to optimize image description

The lens is treated with high-grade, multi-layer HD Coating.*
Compared with conventional multi-layer coatings, this
PENTAX-original coating assures higher light transmittance
and less refl ection to deliver bright, high-contrast images free
of fl are and ghost images, even under demanding lighting
conditions such as backlight.

* HD stands for High Defi nition.

* This lens features a KAF4 lens mount compatible with an electromagnetic diaphragm control
system. In order to use this lens, the camera’s fi rmware must be upgraded to the latest version
(except for the PENTAX K-70). Cameras compatible with this system are: K-1, K-3 II, K-S2
and K-S1. If this lens is mounted on a camera without proper fi rmware upgrade, its diaphragm
control mechanism becomes inactive, making it impossible to obtain correct exposure.

Other features

• Quick-Shift Focus system to allow the user to instantly switch
to manual-focus operation after the subject is captured in
focus by the camera’s AF system.

• SP (Super Protect) Coating applied to the front surface of the
lens to effectively repel water and grease.

• Rounded diaphragm with nine blades to produce a smooth,
beautiful bokeh (defocus) effect, while minimizing the streaking
effect of point light sources.

Note: Designs and specifi cations are subject to change without notice.