Calumet Photographic | Lenses/Large Format Lenses (New)

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Lenses/Large Format Lenses (New)

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HD-DA645 28-45mm F4.5ED AW SR
Lens

An ultra-wide-angle zoom
lens designed to optimize
the optical performance
of the PENTAX 645Z, and
usable on all PENTAX
medium-format digital SLR
cameras. Providing focal
lengths from 22mm to
35.5mm in the 35mm
format, this is
exclusively designed for
digital imaging. Its
image circle is optimized
for an image sensor of
the new PENTAX 645Z
medium-format digital SLR
camera (launched on June
27), and a number of
PENTAX-developed
technologies including
advanced lens coatings
are incorporated, to
deliver
super-high-resolution
images made possible only
by medium-format digital
SLR cameras. Thanks to
its dustproof,
weather-resistant
construction, this lens
also offers outstanding
reliability and
durability even under
demanding shooting
conditions, allowing the
photographer to capture
various outdoor images,
such as sweeping
landscapes, without
worries. Main Features:
1. First ultra-wide-angle
zoom lens for use with
medium-format digital SLR
cameras: This zoom lens
offers a zoom ratio of
approximately 1.6 times
to cover ultra-wide-angle
to wide-angle ranges (for
focal lengths of 22mm to
35.5mm in the 35mm, when
mounted on a PENTAX 645Z
or 645D camera body).
With visual effects
unique to wide-angle
lenses, including
exaggerated perspective
and expanded
depth-of-field, this
lens can be used for a
wide variety of scenes
and subjects, such as
sweeping landscapes and
cramped rooms, adding
more versatility to
advanced medium-format
digital SLR photography.
2. State-of-the-art
optical design to
optimize
super-high-resolution
images captured by
mediumformat digital SLR
cameras: Designed as the
HD PENTAX DA-series model
in the PENTAX 645 lens
series, this lens’s
image circle is optimized
for the image sensor of
the PENTAX 645Z camera
body. Its optics consists
of 17 elements in 12
groups, including two
high-performance
aspherical elements and
two ED (Extra-low
Dispersion) elements, to
enhance image resolution
and brightness at edges,
while minimizing various
aberrations. Coupled with
innovative lens coatings
and an anti-reflective
coating applied to the
interior of the lens
barrel, this lens is
designed to bring out the
best performance of
medium-format digital SLR
cameras. 3. HD Coating
and Aero Bright Coating
to optimize light
transmittance and
minimize reflection: This
lens is treated with the
high-grade, multi-layer
HD Coating* to optimize
light transmittance and
minimize reflection. This
coating delivers sharp,
clear images free of
flare and ghost images,
even under demanding
lighting conditions such
as backlight. By coupling
this coating with the
PENTAX-exclusive,
high-grade Aero Bright
Coating, ** this lens is
designed to assure
exceptionally high light
transmittance and
super-low refraction. *
HD stands for High
Definition. ** A
PENTAX-original lens
coating process developed
through the use of
nanotechnology. Using a
silica aerogel with a
uniform porous structure
as the base material,
this coating produces
clear, high-quality
images by assuring
outstanding
anti-reflection
performance over a broad
wavelength range. 4.
PENTAX-original,
lens-installed SR
mechanism: This lens
incorporates the
PENTAX-innovated SR
(Shake Reduction)
mechanism within the lens
barrel. Since this
mechanism effectively
compensates for camera
shake up to approximately
3.5 shutter steps, the
user is assured of sharp,
blur-free images even
under conditions prone to
camera shake, such as
when handholding the
camera at poorly lit
locations without flash
illumination, or when
photographing sunset
scenes. 5. Dependable
dustproof,
weather-resistant
construction: As the
newest member of the AW
(All Weather) series,
this lens features a
dependable dustproof,
weather-resistant
construction with 11
special seals to
effectively prevent the
intrusion of dust and
water into the lens
interior. By mounting
this lens on the PENTAX
645Z camera body, the
user is assured of a
durable, reliable
digital imaging system
that performs superbly in
demanding shooting
settings — even in rain
or mist, or in locations
prone to water splashes
or spray. 6. Other
features: • SP (Super
Protect) Coating applied
to the front surface of
the lens to effectively
repel water and grease
• Rounded diaphragm to
produce a smooth,
beautiful bokeh
(out-of-focus rendition),
while minimizing the
streaking effect of point
light sources • Smooth,
quiet autofocus
operation driven by a
built-in DC motor •
Quick-Shift Focus system
for instant switching to
manual-focus operation
after the subject is
captured in focus by the
camera’s AF system •
Various filters such as
the C-PL (circular
polarizing) filter can be
attached to the front
lens - a very unique
feature for a wide-angle
lens.

Availability: In Stock

£4599.00

Available

Depth-of-Field Calculator

This handy little
pocket-sized! tool is
essential for those
precision shots that
require exact depth of
field settings and/or
lens tilt and swing
angles. Two calculators
in one, the Rodenstock
Depth-of-Field Calculator
gives you the optimum
f/stop more precisely
than any of the tables or
depth of field devices
provided with some
cameras. The Depth of
Field Calculator can be
used with all camera
formats from 35mm up
through 8 x 10". With the
Lens Tilt and Swing
Calculator, or
Scheimpflug Calculator,
you only have to focus
your camera on two
Scheimpflug points and
set a few values on the
calculator and it will
provide the exact lens
tilt/swing angle. Both
calculators come with
step-by-step, easy to
follow instructions.

Availability: In Stock

£55.06

Available

Apo-Digitar 4.5/90mm NK0 Lens

Schneider Apo-Digitar
4.5/90 mm in Aperture
Mount NK-0 Image circle
90mm at f/11 When used in
combination with a DSLR
the following perspective
comparison applies: =
90mm on SLR full frame =
125mm on 48x36 digital
back CCD = 144mm on 4,
5x6cm film size = 270mm
on 4x5" film size

Availability: In Stock

£824.00

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