Archived from groups: rec.photo.digital (More info?
"Kevin McMurtrie" <email@example.com> wrote in message
> In article <firstname.lastname@example.org>,
> jp <email@example.com> wrote:
> > I am looking for camera in range of 300-400$
> > 4-6Mpx new or used.What is your sugestion?
> > I like to use heliopan 1000 IR filter.
> > Thanks for any help.
> > George.
> The old Oly C2000Z is excessively sensitive to IR. IR LEDs, hot coals,
> heating elements, and dimmed light bulbs photograph as cyan in a dimly
> lit room. It's only 2Mpix, though.
> Canon makes astrophotography "a" versions of some of their DSLRs. A
> filter is removed so light outside of the visible spectrum can expose
> the sensor. If they make a 300Da, it might not cost too much after the
> 350D is released.
The Canon 20Da is not IR sensitive. They changed the IR block filter to
allow passage of the H<alpha> band which is visible red at 636nm. The 20Da
is special order, Japan only, 3 month delivery upon order, no price