Infrared work; No dedicated cameras?

According to :
Betty J. Miller writes:

[ ... ]

Quite a few early PS cameras were at least partially IR sensitive.
Easy to check by watching a remote thru your camera while holding the
remote power on button.

Oh, yes. And earlier Kodak DCS cameras had no built-in IR block
filter; you were supposed to put one in front of the lens. I believe
the 200 and 400 series were this way; the later 500, 600, and 700
series had a removable filter behind the lens, which could be replaced
with an antialiasing filter or left out entirely. I think the 300
series had a fixed built-in filter.

And the Kodak NC200e/c also apparently had no IR block filter,
making the addition of a "Hot Mirror" filter necessary under certain
circumstances. Since I have a couple of those, I should experiment
without the HM filter and with a filter to block most visible light.

Enjoy,
DoN.

--
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(DoN. Nichols) writes:

According to :
Betty J. Miller writes:

[ ... ]

Quite a few early PS cameras were at least partially IR sensitive.
Easy to check by watching a remote thru your camera while holding the
remote power on button.

Oh, yes. And earlier Kodak DCS cameras had no built-in IR block
filter; you were supposed to put one in front of the lens. I believe
the 200 and 400 series were this way; the later 500, 600, and 700
series had a removable filter behind the lens, which could be replaced
with an antialiasing filter or left out entirely. I think the 300
series had a fixed built-in filter.

And the Kodak NC200e/c also apparently had no IR block filter,
making the addition of a "Hot Mirror" filter necessary under certain
circumstances.

Well, the NC2000 was basically of the DCS400 generation, as I
recall. It seems to be basically a 420 with a different sensor: fewer
pixels, but bigger overall.

Since I have a couple of those, I should experiment
without the HM filter and with a filter to block most visible light.

It ought to work fine. There was a DCS420IR, apparently; see
http://www.mir.com.my/rb/photography/companies/Kodak/index1.htm
for more.

--
-Stephen H. Westin
Any information or opinions in this message are mine: they do not
represent the position of Cornell University or any of its sponsors.

On Mon, 03 Oct 2005 22:00:43 -0400,
wrote:

writes:

In message ,
wrote:

It has been done, but it's a small market. Kodak used to sell
monochrome and IR-only versions of various DCS digital SLR's.

Perhaps they were ahead of their time. There might be more of a market
now.

I'd buy one with an EOS mount if the price/performance were right.

No doubt. You and hundreds, or even thousands, of others. Not enough
to interest, say, Canon, who are shipping millions of DSLR's.

Canon is selling the 20Da which is only going to sell in the low
thousands because it's an astro-camera version of the 20D. However,
it can still be used terrestrially.
-Rich

In message ,
(DoN. Nichols) wrote:

According to :
In message ,
wrote:

It has been done, but it's a small market. Kodak used to sell
monochrome and IR-only versions of various DCS digital SLR's.

Perhaps they were ahead of their time. There might be more of a market
now.

There is a web site somewhere (pointed out in this newsgroup)
containing instructions for removing the IR-block filter from the sensor
for the D70. Presumably. something similar could be done for at least
some of the Cannon herd.

I'd buy one with an EOS mount if the price/performance were right.

Would you switch to Nikon to get the IR capability?

No. I already have Canon lenses and color DSLRs.
--


John P Sheehy