Sony's Alpha line of cameras and lenses is built on the legacy of
the Minolta system, although Sony is relatively new to the world of
DSLRs. The Sony Alpha A700 (12 MP), appears to be the
logical successor to the Minolta Maxxum 7D, a high-end prosumer
DSLR. The most obvious current competitors are the Nikon D300 (12 MP)
and the Canon EOS 40D (10 MP).
A notable and very useful feature is the in-body
stabilization system of Sony Alpha DSLR cameras, which both Canon and
Nikon DSLRs lack. The system effectively converts any compatible
Dynax/Maxxum/Alpha lens from Minolta or Konica Minolta into image
stabilized lenses by moving the sensor slightly to compensate for the
movement of the image, rather then moving the image via the lens, as
both Nikon (VR) and Canon (IS) have chosen to do. The obvious
advantage of in-body stabilization is that it works with all lenses
and you only have to pay for it once. The Nikon and Canon systems have
the advantage that they stabilize the image in the viewfinder as well
as on the sensor, which makes image capturing a little easier, but the
disadvantage is that you have to pay for it in each lens. The best of
both worlds would be a system with both body and lens stabilization,
giving the user the freedom to chose which system to use, though I
suspect that may be a long time coming from both Nikon and
Canon. Pentax has also chosen "in-body" stabilization.
The Sony Alpha A700 is priced at $1400, landing between the Canon
EOS 40D ($1299) and the Nikon D300 ($1799). It does lack the "live view"
system, which is present on both the D300 and 40D. It has a slower
maximum frame rate (5fps) than either the EOS 40D (6.5fps) or the D300
(6/8fps). Both the Canon and Nikon DSLRs use a 14-bit A/d conversion
system. Sony hasn't yet published details on the A/D converter in the
Alpha A700, but I suspect it's 12-bits or they would probably have
commented on it.
You can preorder the Sony Alpha A700 at amazon.com and help to support photo.net.
Here's what Sony has to say about the new Alpha A700 DSLR:
SONYS NEW D-SLR CAMERA SETS HIGH PERFORMANCE
STANDARDS
SAN DIEGO, Sept. 5, 2007 Sony is expanding
its a (Alpha) digital SLR system with the
introduction of the DSLR-A700
camera, which is aimed at photo enthusiasts or serious photo
hobbyists.
The new model features advanced imaging technologies and
ultra-responsive operation, as
well as a lightweight, dust- and moisture-resistant, magnesium alloy
construction common
to enthusiast-class D-SLR cameras.
Like Sonys mainstream DSLR-A100 model, the new A700 unit
incorporates Super
SteadyShot Inside image stabilization in the camera body and is
compatible with most
Minolta Maxxum mount lenses in addition to Sony lenses.
"Discerning photo enthusiasts will be impressed with the
rugged construction and
outstanding performance of the A700, said Phil Lubell, director of
marketing for digital
cameras at Sony Electronics. "We also expect that this new camera
will re-define the
post-capture experience with HDMI output for high-quality
playback of images on
high-definition televisions."
Picture Quality
The cameras new 12.2-megapixel Exmor CMOS sensor
conducts analog-to-digital
(A/D) signal conversion and dual noise reduction right on the sensor
itself. Noise
reduction is applied to analog signals before A/D conversion and the
resulting digital
signals are then subject to a second round of noise reduction.
According to Lubell, "These digital signals are virtually
immune to external noise
and interference."
Clean, noise-free digital signals are then sent to the newly
developed BIONZ
processing engine. Lubell said this engine has been optimized to
process data-rich picture
information at high speeds, and to reduce picture noise in the RAW
data stage before final
image compression and encoding. The results are high-resolution,
detailed images with rich
tonal reproduction.
Extraordinary Responsiveness
The A700 camera is engineered to be fast and ultra-responsive so as
to become "a
virtual extension of your own senses," Lubell said,
"capturing fleeting moments
as you see them."
A newly developed, auto-focus system features 11 wide-area sensors,
including a center
dual cross sensor comprised of two horizontal and two vertical line
sensors for
exceptional AF precision. An F2.8 line sensor leverages the brightness
of fast aperture
lenses for even greater precision. Lubell said that extraordinary
focusing speed has been
realized through improved algorithms and a high-torque focusing drive
motor.
The large, bright, viewfinder uses a precision-ground optical glass
pentaprism and a
high refractive index eyepiece lens to provide 0.9x viewfinder
magnification and 95
percent frame coverage. Manual focusing is aided by an interchangeable
spherical acute
matte focusing screen.
The camera has a high-performance vertical traverse shutter with a
maximum shutter
speed of 1/8,000th of a second to freeze fast-moving
action. A high-power
coreless motor charges the shutter and mirror mechanism, allowing
continuous shooting at
up to five frames per second. In JPEG fine or standard mode,
continuous shooting is
limited only by the capacity of the media card (sold separately),
while up to 18 frames
can be captured in RAW.
Expanded Creativity
The new camera features fourteen creative styles, including night
view, autumn leaves
or vivid, which can be selected to enhance images. These effects can
then be fine-tuned by
customizing contrast, sharpness, zone matching and other
parameters.
Sonys Dynamic Range Optimizer (DRO) function has been updated
on this model so
users can choose the desired level of detail recovered in areas of
shadow. The advanced
mode offers the option of five levels of user selectable
correction. Additionally, DRO
bracketing creates three images from a single capture with three
different levels of DRO.
There is an extensive array of customization options to personalize
the camera to match
shooting styles. The units quick navigation interface can be
accessed instantly with
the four-way multi-selector, and selected parameters can be adjusted
directly by control
dials.
Up to 28 camera settings can be stored in one of three user
memories for instant
recall. The units custom function button can be assigned to 15
frequently-accessed
functions.
With the supplied remote capture application, the camera can be
controlled from a
compatible PC via USB without even touching the camera, and files can
be stored on the
computer instead of the media card.
High-Quality Pictures on an HDTV
The A700 model features an HDMI output for connection to HDTV sets,
putting a
high-resolution spin on the conventional photo slideshow.
When connected to a Sony BRAVIA LCD HD television, photos are
optimized for viewing
with the new "PhotoTV HD" mode. This mode brings the look of
actual printed
photography to the television, reproducing high-quality digital photos
by fine-tuning such
image parameters as sharpness, gradation and color specifically for
photographs.
The exceptional viewing experience of this camera also extends to
viewing photos on its
3-inch LCD screen. The screens size and ultra-sharp resolution
(921K) makes it
possible to check focus and image quality with much greater
accuracy.
A Flexible System
The camera will be introduced with two new lenses, bringing
Sonys lens and
teleconverter catalog up to 23 models. Supplied as a standard kit
lens, the new DT 16-105
mm f.3.5 5.6 lens features a distinctive zoom range (35mm
equivalency of 24
157.5 mm); compact, lightweight design; and internal focusing. The
other addition is a
powerful and compact high-magnification DT 18 250 mm f3.5
6.3 lens. Sony is
also planning to introduce a specialty 70 -300 mm f4.5 5.6 SSM
G telephoto lens
featuring super sonic wave motor auto focus drive system for smooth
auto focusing in
Spring 2008.
Sonys full line of accessories will also expand to include a
new vertical grip.
Equipped with buttons and switches for the most essential control
functions, it offers the
same ease of operation and handling as when shooting vertically. It
houses two
InfoLithium batteries (sold separately), which will automatically
switch to the second
battery when the first one runs out. Remaining charges of both
batteries are displayed on
the cameras LCD screen.
Memory That Keeps Up With The Camera
The model also features separate slots for Memory Stick Duo
media cards
compatible with the Memory Stick PRO-HG high-speed data transfer
standard, as well
as CompactFlash Type I/II media cards compatible with the new
Ultra Direct Memory
Access standard for up to 300x write speeds. Sony is also
introducing new 300x high-speed CompactFlash
memory cards, ideal for
high-end photographers requiring fast write speeds. The new
models, available in
2GB or 8GB capacity, expand Sonys current line of
CompactFlash cards that also
include 66X and 133X speeds, with capacities ranging from 1GB to
4GB.
The DSLR-A700 camera body, DT 16 105 mm lens, and DT 18-250
mm lens will be
available for about $1,400, $580 and $550, respectively. The
DSLR-A700K kit with an 18-70
mm lens will be available for about $1,500, and the DSLR-A700P kit
with the 16-105 mm lens
will be available for about $1,900. The camera body and DSLR-A700K kit
will ship in
October and the DSLR-A700P kit in November. All will be available at
sonystyle.com, Sony
Style retail stores (www.sonystyle.com/retail), at military base
exchanges, and at
authorized dealers nationwide.
Pre-orders begin online today at amazon.com.
Sony A700 Features
12.24 MP Exmor Imaging Sensor
A newly designed APS-C size CMOS imager with on-chip
noise-canceling before and after
A/D conversion provides over 12 million pixels, drawing out the full
image description
power of the a (alpha) DSLR-A700s high-performance lenses and
providing spectacular
detail for making big prints. Advanced on-sensor A/D conversion yields
rich tonal
reproduction with high signal-to-noise ratio.
Professional Lenses and Accessories
The a (alpha) DSLR-A700 accepts a superb array of precision optics,
including new Sony
wide-aperture zoom lenses that perform brilliantly over a broad range
of focal lengths,
Sony G Series lenses with advanced motorized autofocusing,
amazingly bright
Carl Zeiss T* coated lenses, and over 16 million Minolta a-mount
lenses sold worldwide
-- plus professional-quality flash units and system accessories to
expand your creative
horizons.
Super SteadyShot Image Stabilization
Built-in technology moves the image sensor in response to camera
shake, enabling every
lens to benefit from automatic blur reduction -- and provides an
advantage of up to 4.0
shutter speed steps to sharpen images in lower light, for hand-held
shots that would
normally require a tripod.
Bionz Image Processor
At the heart of the a (alpha) DSLR-A700 DSLR camera is the advanced
Sony Bionz
Image Processor, using hardware-based Large Scale Integrated (LSI)
circuitry that improves
camera response time, screens out noise before RAW data conversion,
handles Dynamic Range
Optimization processing and prolongs battery life.
Dynamic Range Optimizer
To recover details in dark or bright areas of the picture, the a
(alpha) DSLR-A700
provides multiple levels of Dynamic Range Optimization: Standard mode,
to improve shadow
detail using standard gamma curves; Advanced Auto mode, allowing you
to select any of 5
DRO correction levels, or DRO Advanced Bracketing, that automatically
takes three shots at
different DRO levels with a single shutter press.
Continuous 5 Frames-Per-Second Advance at 12.24 MP
The high-speed processing power of its Bionz engine, a
quick-response coreless
motor to drive the shutter, and dual mirror stoppers to prevent mirror
bounce -- they all
enable the a (alpha) DSLR-A700 to capture action more effectively at
either 5 or 3 frames
per second, even shooting at full 12.24 MP resolution. You can also
shoot continuously to
the limit of available memory in JPEG Fine and Standard modes.
Advanced Pentaprism Viewfinder
With a bright focusing matte, an optical glass prism and glass
lenses that prevent
ghosts inside the finder, the a (alpha) DSLR-A700s viewfinder
image makes it easier
to see your subject, compose your shot and adjust focus manually.
Eye-Start Autofocus System
The a (alpha) DSLR-A700 begins its precision autofocus adjustments
the moment you bring
your eye to the viewfinder -- so youll be ready to catch the
perfect moment.
11-Point Center Dual Cross AF Sensor
A newly developed Sony AutoFocus system with a large f2.8 sensor
improves your ability
to frame the subject and capture moving subjects with greater focusing
precision -- and a
focus drive clutch lets you switch seamlessly between auto and manual
focusing by pressing
a simple button.
Super-Accurate Exposure Control
A 40-segment honeycomb sensing system provides multi-pattern
measuring for superior
exposure control accuracy in a wide range of lighting conditions.
Simple Camera Control Menus
Even with all its high-tech features, the a (alpha) DSLR-A700 is
amazingly simple to
operate -- and a quick press of the Function (Fn) button switches the
LCD display from
standard menu information to a new Quick Navigation screen for camera
setup via joystick
and forward-back controls. The menus are easy and intuitive -- and
memory function lets
you save and recall personalized camera settings.
Creative Custom Settings
The a (alpha) DSLR-A700 is designed to bring out your creativity
with a wide range of
auto preference settings, including four basic image styles (Standard,
Vivid, Neutral and
Adobe RGB) and three style-box memory settings for quick setup in
special events like
weddings and competitive sports.
Easy-to-Use Exposure Mode Dial
The a (alpha) DSLR-A700s top-mounted dial gives you quick
access to Program Auto,
Aperture priority, Shutter-speed priority, Manual and full Auto
exposure setting modes --
as well as six scene selection modes that optimize camera focus,
exposure, brightness,
contrast and other settings for Portrait, Landscape, Macro, Sports
Action, Sunset and
Night View/Portrait scenes.
Quick Setting Recall
The C button allows you to make changes more quickly by
calling up Creative
Style settings, Exposure compensation, Flash compensation and many
more operating modes
and camera functions.
Stamina Power
To give you confidence for long shooting sessions in the field, the
a (alpha) DSLR-A700
can take up to 650 shots on a fully charged NP-FM500H InfoLithium
battery -- with
indication in percentage of about how much battery power remains.
Built-In Flash
The a (alpha) DSLR-A700 flip-up flash covers a wide focal range,
synchronizes at 1/250
sec., supports red-eye reduction and slow flash features as well as
manual flash mode to
set flash intensity. A wireless flash signal is available for external
flash
synchronization.
Anti-Dust Technology
Changing lenses in a DSLR can allow dust to enter the camera -- so
to help keep the
CMOS imager cleaner for better pictures, the a (alpha) DSLR-A700
utilizes both static-free
anti-dust coating on the CCD filter and anti-dust vibration that
automatically shakes the
CCD to dislodge dust each time the camera is shut off.
Rugged Magnesium Alloy Body
The a (alpha) DSLR-A700 is built to very high standards of
durability and performance
-- so you can shoot on location in difficult conditions with
confidence that your
equipment can handle the challenge.
XtraFine 3.0LCD Screen with 921k Pixels
With almost 1 MP performance, its like having a
high-resolution photo viewer
built into your camera -- and the a (alpha) DSLR-A700s amazing
photo-quality screen
displays sharp, bright images even outdoors with a wide viewing angle
so you can share
photos more easily.
PhotoTV HD Viewing with HDMI Output
The a (alpha) DSLR-A700 provides direct HDMI output to your
Bravia HDTV and
other compatible HDTV screens, so you can view and share photos in
breathtaking clarity
and detail. You can choose between standard 3:2 and widescreen 16:9
aspect ratio -- and
with new Bravia HDTV models, photos are automatically optimized in
sharpness, gradation
and color reproduction for HD display.
Wireless Remote Control
For shooting as well as viewing convenience, Sony supplies a
multi-function wireless
remote control with the a (alpha) DSLR-A700 -- allowing you to control
HDTV photo viewing
and trip the shutter by remote to put yourself in the picture.
Versatile Recording Formats
Images can be captured in RAW, cRAW (optimized for fast action),
RAW+JPEG and three
JPEG modes (Extra Fine, Fine and Standard), for greater versatility in
every digital photo
application.
Powerful Supplied Software
The a (alpha) DSLR-A700 comes with a powerful RAW conversion and
image management
system and newly developed RAW software that gives you the power to
handle large volumes
of RAW data while taking full advantage of the sophisticated imaging
capabilities of the a
(alpha) DSLR-A700.
Dual Media Options
For image capture with optional media you may already own, the a
(alpha) DSLR-A700 has
built-in slots for both CompactFlash Type I/II media and Memory
Stick Duo
media or high-capacity Memory Stick PRO Duo media.
Sony A700 Specifications
Imaging Device
- 12.24 (effective) APS Exmor Sensor; 23.5 x 15.6 mm; RGB
primary color filter
Megapixel
Bionz Engine
- Yes w/ Dynamic Range Optimizer. DRO Modes include Off, Standard,
Advanced Auto, Advanced
Manual, Advanced 3-frame bracketing. Advanced Manual include 5
adjustable levels.
LCD
- 3.0" TFT (921k pixels) LCD with Clear Photo design
Microphone
Viewfinder
- Optical: TTL, 0.9x, 95% coverage
White Balance
- Auto plus 6 Modes (Daylight, Shade, Cloudy, Tungsten,
Fluorescent, Flash); +/- 3-step
adjustable Kelvin temperature control (2500-9900k w/19-step
Magenta/Green compensation.
Self Timer
- Yes (10 seconds, 2 seconds, Off)
Burst Mode
- Selectable Hi (5 FPS), Lo (3 FPS); JPEG Standard/Fine ?
Unlimited to capacity of media;
JPEG Extra Fine ? 8; cRAW (compressed) ? 24; cRAW+JPEG ? 12; RAW ?
17; RAW+JPEG ? 11.
Color Mode(s)
- Standard, Vivid, Neutral, Adobe RGB, Clear, Deep, Light,
Portrait, Landscape, Sunset,
Night view, Autumn, B/W, Sepia (Except for Adobe RGB, all other
color modes use the sRGB
color space)
Red-Eye Reduction
Memory Stick PRO Media Compatibility
- Tested to support up to 8GB media capacity; does not support
Access Control security
function
Red-Eye Reduction-2
Scene Mode(s)
- Portrait, Landscape, Macro, Sports, Sunset, Night view/portrait
Movie Mode(s)
AF Illuminator Light
Multi-Pattern Measuring
- 40-segment honeycomb pattern; Multi-segment, Center Weighted,
Spot
Histogram Display
- Yes; RGB display; Playback only
Output(s)
- Video: Yes, NTSC/PAL Selectable
USB Port(s)
- Yes, Supports USB 2.0 Hi-speed
Flash Mode(s)
- Manual Pop-up: Auto, Fill-flash, Rear flash sync, Wireless off
camera flash (with Flash
HVL-F56AM, F36AM)
Flash Effective Range
- Manual popup; Approx. GN 12 (in meters at ISO 100); Coverage of
up to 16 mm (in focal
length); Approx. 3 sec. recycling time; Flash-ready
indicator.
Shutter Speed
- 30 ~ 1/8000 sec 55 step, Bulb
Exposure
- Manual Exposure: Yes, w/EV indicator
EV Compensation
- =+/-3.0 EV, 0.3 EV / 0.5 EV steps selectable
ISO
- Auto/160/200/400/800/1600/3200/4000/5000/6400
Lens Type
Focus
- Auto Focus: TTL Phase Detection
Focus-2
- Multi-point: 11 Area, 11 Line, 5 center twin-cross lines
Focus-3
Focus-4
- Wide focus area (Auto, 11 areas), Spot focus area, Local focus
area (11 local areas
selectable)
Focus-5
- Visual Focus Confirm: Direct via VF Matte Screen
Exposure-2
- Manual Exposure: Yes; Aperture/Shutter Priority, Manual
Exposure-3
- Program Shift: Yes, Command Dial
Battery Type
- NP-FM500H Lithium-ion rechargeable battery
Battery Capacity
- 7.2V, CIPA standard: approx. 650 pictures3
Limited Warranty
Supplied Software
- Image Data Converter SR ver.2.0, Image Data Lightbox SR ver.1.0,
Remote Camera Control
ver.1.0 (all Windows & Macintosh), Picture Motion Browser
Ver.2.1.02 (Windows only).
Operating System Compatibility
- Microsoft Windows 2000 Professional, XP Home and Professional,
Vista; Macintosh OS
X (v 10.1.3 or later). OS must be installed at the factory.
Original text ©2007 Copyright Bob Atkins
Article created September 2007
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