"Brian Baird" wrote in message
.. .
In article ,
says...
That would imply that the infrared cut filter over the CMOS has been
removed or
reduced. Interesting.

Changed according David Littleboy over in rec.photo.digital. The IR
filter hasn't been completely removed, but modified to allow more light
of a certain wavelength to hit the sensor.

It allows Halpha at 636nm to pass, so one can record red nebula.

Google translate the canon.jp website. The product is a 3 month wait,
special order Japan only product. So probably expensive.

Canon modified 20D for astronomy
 

From sci.astro.amateur:


According to the Canon Japan's site, the price of the 20Da in Japan is
"open" and a retail price has not been set by Canon. Canon is
estimating an
approximate 3 month wait for the camera after placing an order for
delivery.
There appears to be a production period between the time of order and
delivery. It would be a more promising sign if a price was quoted,
but we
should know in time from sales in Japan. The US price of the Canon
20D is
now around $1400.



The options seem to be to wait for the camera to be introduced in the
US,
move to Japan:), order a Hutech modified 20D for which there has been
a
delay in production, or modify the 20D yourself.



An alternative is to buy a Canon 300D rebel at about $700 and do the
mod
yourself. Detailed directions for modifying a Canon Rebel he



http://ghonis2.ho8.com/rebelmodnew.html

RichA wrote:

From sci.astro.amateur:


According to the Canon Japan's site, the price of the 20Da in Japan is
"open" and a retail price has not been set by Canon. Canon is
estimating an
approximate 3 month wait for the camera after placing an order for
delivery.
There appears to be a production period between the time of order and
delivery. It would be a more promising sign if a price was quoted,
but we
should know in time from sales in Japan. The US price of the Canon
20D is
now around $1400.


What is different about it?

(or, What is different about it that couldn't be done in a different firmware
load?).

Cheers,
Alan

--
-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm
-- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm
-- [SI] gallery & rulz: http://www.pbase.com/shootin
-- e-meil: there's no such thing as a FreeLunch.

In article ,
says...
What is different about it?

(or, What is different about it that couldn't be done in a different firmware
load?).

Cheers,
Alan

It bawks like a chicken.

Actually, it allows more infrared light into the camera and has some
sort of live/semi-live LCD preview for focusing it low-light
astrophotography situations.

Brian Baird wrote:



Actually, it allows more infrared light into the camera and has some
sort of live/semi-live LCD preview for focusing it low-light
astrophotography situations.

That would imply that the infrared cut filter over the CMOS has been removed or
reduced. Interesting.
http://consumer.usa.canon.com/ir/con...=10464&id=2636

The 'live preview' is prob. a mirror-up/shutter open option which I bet a lot of
DSLR's will end up having for both preview, prehisto(C)* and automatic exposure
settings.

I also found this page which is interesting for the astro types:
http://www.astrosurf.com/buil/20d/20dvs10d.htm

Cheers,
Alan.

The word "prehisto" is (C) 2005 Alan Browne.

--
-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm
-- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm
-- [SI] gallery & rulz: http://www.pbase.com/shootin
-- e-meil: there's no such thing as a FreeLunch.

On Tue, 15 Feb 2005 15:34:40 -0500, Alan Browne
wrote:

Brian Baird wrote:



Actually, it allows more infrared light into the camera and has some
sort of live/semi-live LCD preview for focusing it low-light
astrophotography situations.

That would imply that the infrared cut filter over the CMOS has been removed or
reduced. Interesting.
http://consumer.usa.canon.com/ir/con...=10464&id=2636

The 'live preview' is prob. a mirror-up/shutter open option which I bet a lot of
DSLR's will end up having for both preview, prehisto(C)* and automatic exposure
settings.

I also found this page which is interesting for the astro types:
http://www.astrosurf.com/buil/20d/20dvs10d.htm

Cheers,
Alan.

The word "prehisto" is (C) 2005 Alan Browne.

The astro use of these cameras is exploding.
1. Because they can produce excellent colour shots of
deepsky objects when attached to a telescope.
2. Because the alternatives (astronomical CCD cameras)
cost a fortune and need laptop computers to operate.

-Rich

In article ,
says...
That would imply that the infrared cut filter over the CMOS has been removed or
reduced. Interesting.

Changed according David Littleboy over in rec.photo.digital. The IR
filter hasn't been completely removed, but modified to allow more light
of a certain wavelength to hit the sensor.

"Alan Browne" wrote in message
...
RichA wrote:

From sci.astro.amateur:


According to the Canon Japan's site, the price of the 20Da in Japan is
"open" and a retail price has not been set by Canon. Canon is
estimating an
approximate 3 month wait for the camera after placing an order for
delivery.
There appears to be a production period between the time of order and
delivery. It would be a more promising sign if a price was quoted,
but we
should know in time from sales in Japan. The US price of the Canon
20D is
now around $1400.


What is different about it?

They removed the IR cut filter. Of course, that means if you are going to
use the camera for normal photography you will need a filter on the lens.

They also gave it a semi-transparent mirror, so that you can use the LCD for
preview and focusing.

On Wed, 16 Feb 2005 10:19:56 -0800, "C J Campbell"
wrote:


"Alan Browne" wrote in message
...
RichA wrote:

From sci.astro.amateur:


According to the Canon Japan's site, the price of the 20Da in Japan is
"open" and a retail price has not been set by Canon. Canon is
estimating an
approximate 3 month wait for the camera after placing an order for
delivery.
There appears to be a production period between the time of order and
delivery. It would be a more promising sign if a price was quoted,
but we
should know in time from sales in Japan. The US price of the Canon
20D is
now around $1400.


What is different about it?

They removed the IR cut filter. Of course, that means if you are going to
use the camera for normal photography you will need a filter on the lens.

They also gave it a semi-transparent mirror, so that you can use the LCD for
preview and focusing.


That would make the view darker, as it did with the Olympus E-300
which uses a beam-splitter mirror as well.
-Rich

RichA writes:

That would make the view darker, as it did with the Olympus E-300
which uses a beam-splitter mirror as well.

I don't believe the E300 uses a beam-splitter mirror like the E-10 and E-20
used to do.

--
Michael Meissner
email:
http://www.the-meissners.org