EOS 20Da digital SLR for astronomy photography
EOS 20Da digital SLR for astronomy photography
Amstelveen, The Netherlands,
1 June, 2005.
a leader in photographic and imaging technology, today
announces the launch of the EOS 20Da – a digital
SLR optimised for astrophotography. Based on the popular
EOS 20D camera and joining it as a companion model in
Canon’s product line, the new EOS 20Da digital SLR
specifically addresses the needs of astrophotography with
features such as a live preview on the LCD monitor and
a modified low-pass filter optimised for photographing
the night sky in brilliant detail.
low-pass filter positioned in front of the EOS 20Da’s
8.2 Megapixel CMOS sensor has been modified to yield sharper
and higher contrast images of various astronomical phenomena
such as diffuse reddish nebulae. The modification increases
the transmission of light at the wavelength of 656nm,
known as the Hydrogen Alpha line, or Ha wavelength, by
a factor of 2.5x compared to the standard EOS 20D digital
EOS 20Da digital SLR is a direct result of Canon addressing
the specialised needs of the astrophotography market,”
said Mogens Jensen, Head of Canon Consumer Imaging Europe.
“As an affordable digital alternative to their familiar
film bodies, the EOS 20D offered semi-professional and
serious amateur photographers digital photographic freedom.
Now with the EOS 20Da, we also offer astronomy enthusiasts
a new photographic freedom, by providing an easier and
more cost effective way to photograph the heavens.”
features of Canon EOS 20Da
While traditional digital SLRs lack a live preview on
the LCD monitor due to the reflex mirror and shutter,
the EOS 20Da digital SLR resolves this issue by locking
up the mirror and opening the shutter to display a magnified
live view of the subject on the 1.8” LCD monitor.
(This feature is effective for night viewing conditions
only. It cannot be used in bright light.)
ensure a sharp focus, the central portion of the image
can be magnified on the LCD by 5x (4% of the picture area)
or 10x (1% of the picture area). The live view mode can
also be viewed through a TV monitor while connected to
the EOS 20Da camera’s video OUT terminal.
EOS 20Da is compatible with all Canon EF and EF-S lenses
– the world’s largest selection of interchangeable
autofocus lenses – including select image stabilised
telephoto lenses. Photographers can also attach the EOS
20Da digital SLR to a telescope through the use of widely
EOS 20Da digital SLR features enhanced noise reduction
for long exposures; achieved by incorporating an optimised
CMOS control system. A custom function is also available
for noise reduction, so users can enjoy the wide array
of ISO settings ranging from 100-3200
EOS 20Da retains the same features that have made the
EOS 20D a favourite among discerning photographers, such
as Canon’s DIGIC II processor for low noise, high
speed operation, and excellent image quality. Other features
include an intelligent nine point autofocus system, full
manual controls, five frames per second burst mode, and
RAW, JPEG, and RAW+JPEG image recording capabilities.
reduce vibration at the start of the exposure, self-timer
and mirror lock-up functions are integrated into the camera.
The camera also features a backlit LCD display on top
for easy setting adjustments in the dark.
supplied with Canon EOS 20Da
EOS 20Da is supplied with Canon EOS Solution Disk 9.1,
containing EOS Viewer Utility 1.2, EOS Capture v1.2 and
PhotoStitch 3.1. Canon Digital Photo Professional v1.6
and Adobe Photoshop Elements 2.0 is included to allow
comprehensive image manipulation when needed.
EOS Capture v1.2 is a remote capture and control application
for when the camera is tethered to a computer.
provides automated sequential control of the shutter release
and download of images to the computer. The EOS 20Da is
supplied with the AC adapter kit ACK-E2 as standard to
allow the camera to be operated for long periods on AC
Digital Photo Professional v1.6 provides high-speed processing
of lossless RAW images, and allows real-time display and
immediate application of adjustments to images.
software includes a wide array of RAW, TIFF or JPEG image
editing functions, which give control over variables such
as white balance, dynamic range, exposure compensation
and colour tone. The camera JPEG images can be recorded
in sRGB or Adobe RGB colour space, and the Digital Photo
Professional application supports sRGB, Adobe RGB and
Wide Gamut RGB colour spaces. An ICC (International Colour
Consortium) profile attaches automatically to RAW images
converted to TIFF or JPEG images. This allows faithful
reproduction of colours in software applications that
support ICC profiles, such as Adobe Photoshop.
processing of various parameter changes can now be batched
rather than carried out sequentially, vastly increasing
the efficiency when applying a number of changes to the
The EOS 20Da includes membership of Canon’s online
photo album, CANON iMAGE GATEWAY with 100MB of space for
image uploads and photo sharing.
accessories for Canon EOS 20Da
To support the needs of astrophotography, Canon provides
a full line of EOS system accessories compatible with
the EOS 20Da digital SLR. For control over shutter release
timing and to reduce vibration, Canon offers remote control
solutions such as the Timer Remote Controller TC-80N3,
and Remote Switch RS-80N3. When the camera is attached
to a telescope, low angles can make composing shots through
the viewfinder difficult – Canon’s Angle Finder
C attaches to the camera’s eyepiece allowing adjustment
of the viewing angle while providing a 2.5x magnification.
To increase battery life for even longer exposures, the
optional Battery Grip BG-E2 uses two powerful Lithium-Ion
battery packs. It can also be used with six AA batteries
in the supplied. BM-E2 battery magazine.
of Canon EOS 20Da
As a specialised product, the EOS 20Da is only available
to order from selected dealers; each country has a number
of specialist dealers that can take orders for this camera.
These dealers will have the opportunity to place orders
for a limited time only. Local Canon sales companies can
be contacted for the country dealer list.