Infrared filter - question

Archived from groups: rec.photo.digital (More info?)

Hi,


I have a question regarding infrared photography.

I heard it can be done in Digital cameras as well (near IR?).

I have Canon EOS Rebel, is it capable?

Also I have been to a shop today and asked about filter and they showed
me a strange filter that actually looks from the front as a mirror, I
tried to take pictures but all it does it filters our the light so I
have less light, but when I adjust the speed I get same colors as
regular picture, so I guess its not infrared IR or do I need to use
different tecnique?

Regards,
Roni

Archived from groups: rec.photo.digital (More info?)

Yes, I did check with remote control and can see the Red light.


So I am a bit confused, what did you mean by using B&W? Is there a way
to set it on camera before taking the picture? I could not find the
option.
Roni

Archived from groups: rec.photo.digital (More info?)

In article <1111834499.492331.29800@o13g2000cwo.googlegroups.com>,
biphoto@hotmail.com says...
> Most digital cameras have a filter that blocks IR. Whereas it is
> possible to get some IR past this filter it is not easy. A IR filter,
> one that passes IR but blocks visible light will look like a black
> piece of plastic.
>
> Some digital cameras have a IR mode, like the Sony F828, here they can
> swing the IR filter out of the way.
>
> Scott
>
>

In the Sony 828 you can hear and feel the IR filter swing out of the way when
you switch the camera to "nightshot" or "night framing" mode.

Although the camera will work in this mode, you are severely limited as to
what you can do with it. It will not switch into the "night shot" mode when
in manual, making the infra-red mode useless for all but the most mundane IR
shots, (no apeture or shutter speed adjustments).

I just thought I'de throw this info out here, in case someone was inspired to
buy it for the IR mode.


--
Larry Lynch
Mystic, Ct.

Archived from groups: rec.photo.digital (More info?)

rsegoly
Yes you can take IR shots with the Canon Digital Rebel with a R72 Filter.
The filter looks black and photos will show up as red in your digital rebel.
A photo with out the filter might be shutter 125 f/8 but with R72 and
Digital Rebel it will be like 4sec f/8. You then can desaturate the photo to
make it B&W with the software that comes with the camera.



If your rebel is a film (35mm) camera, then you will need IR film.
Not sure if 35mm film Rebel will accept IR film.

Hope that helps

"rsegoly" <roni.segoly@gmail.com> wrote in message
news:1111821825.416136.168220@o13g2000cwo.googlegroups.com...
> Hi,
>
>
> I have a question regarding infrared photography.
>
> I heard it can be done in Digital cameras as well (near IR?).
>
> I have Canon EOS Rebel, is it capable?
>
> Also I have been to a shop today and asked about filter and they showed
> me a strange filter that actually looks from the front as a mirror, I
> tried to take pictures but all it does it filters our the light so I
> have less light, but when I adjust the speed I get same colors as
> regular picture, so I guess its not infrared IR or do I need to use
> different tecnique?
>
> Regards,
> Roni
>



----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Archived from groups: rec.photo.digital (More info?)

"YoYo" <itsreallynone@yourbusiness.com> wrote in message
news:42455c4a$1_1@127.0.0.1...
> rsegoly
> Yes you can take IR shots with the Canon Digital Rebel with a R72 Filter.
> The filter looks black and photos will show up as red in your digital
> rebel.
> A photo with out the filter might be shutter 125 f/8 but with R72 and
> Digital Rebel it will be like 4sec f/8. You then can desaturate the photo
> to
> make it B&W with the software that comes with the camera.
>
>
>
> If your rebel is a film (35mm) camera, then you will need IR film.
> Not sure if 35mm film Rebel will accept IR film.
>
> Hope that helps
>

Canon film cameras will accept IR film, but many of them, with the exception
of the 1 series and the older (10S and earlier) bodies have an IR film
counter, which will fog about 2mm of the bottom of the frame.

--
Skip Middleton
http://www.shadowcatcherimagery.com

Archived from groups: rec.photo.digital (More info?)

"rsegoly" <rsegoly@hotmail.com> wrote in message
news:1111836670.223640.145820@f14g2000cwb.googlegroups.com...
> My SLR is Canon. Any how the filter I was asking about looks like a
> mirror and not like black plastic (different than what I saw on Web)
> the seller said its infrared, and I am not sure the issue is my camera
> (not supporting) or the filter being something else (nothing written on
> it).
Since your eyes are not sensitive to IR, it isn't surprising that you see
nothing through the filter (in fact you shouldn't be able to).
What kind if IR filter? Hoya R72, Hoya R90, or Kodak 87?
>
> I saw on Web a test for IR support on digital will be to see the Red
> beam from remote control, and indeed I can see it with filter, and not
> without.
The filter is indeed passing IR.
>
> Any how I also saw I need to take picture in B&W mode which I am afraid
> is not supporting on my camera (odd enough).
After you download the image to your photo processing program, there are at
least two ways:
1) Save the red channel to a file.
2) Convert the image to grey scale.

I own a D70, and I can say that using the IR filter yields a different image
all right. When viewed on the screen, it has a red cast. That is the
expect result.

Unfortunately, the output does not completely imitate IR film. IR film is
grainy, the digital output is not. So an essential part of the charm of IR
images is gone.
Jim
>
> Any clues?
>
> Roni
>

Archived from groups: rec.photo.digital (More info?)

rsegoly wrote:
>
> Hi,
>
> I have a question regarding infrared photography.
>
> I heard it can be done in Digital cameras as well (near IR?).
>
> I have Canon EOS Rebel, is it capable?
>
> Also I have been to a shop today and asked about filter and they showed
> me a strange filter that actually looks from the front as a mirror, I
> tried to take pictures but all it does it filters our the light so I
> have less light, but when I adjust the speed I get same colors as
> regular picture, so I guess its not infrared IR or do I need to use
> different tecnique?

google says this about ir filters:
http://www.google.com/search?hl=en [...] gle+Search

>
> Regards,
> Roni

Archived from groups: rec.photo.digital (More info?)

Jim wrote:

> IR film is
> grainy, the digital output is not. So an essential part of the charm of IR
> images is gone.

Oh, please.

--
It Came From C. L. Smith's Unclaimed Mysteries.
http://www.unclaimedmysteries.net

"Psych-O-Delic Voodoo Thunder Pig" <jp@attbi.com> wrote in
rec.photo.digital: "Here's my serious reply: You're an idiot."

Archived from groups: rec.photo.digital (More info?)

I have shot 100's of frames with Color sometimes called false color and B/W
IR film using Canon cameras mostly from airplanes. Remember IR film has to
be loaded and unloaded in total darkness that's primarily where it gets
exposed accidentally. I carried a black bag with me to do this. I used dark
red filters and sometimes stacked them with orange. I used a R72 and others.
Most of what I was shooting was from about 1000 - 3000 ft looking for
imprints of old buildings using B/W IR. The best time is early in the
morning or late in the afternoon. Where buildings once sat the ground heats
up slower and cools slower and IR shows the imprint as cooler areas. I also
have used IR color to find old home sites because different trees show up as
different colors. It is also used to spot diseased trees. I have shot a few
IR shots with filters using deep red and a digital camera but they require a
long exposure to get a decent picture. A tripod is a must have. Where as
Film its fast enough to get a decent exposure hand held. Also the exposure
is a guesstamate. There are many pages dealing with Digital as well as film
IR with a google search.


"Skip M" <shadowcatcher@cox.net> wrote in message
news:lFd1e.857$k57.761@fed1read07...
> "YoYo" <itsreallynone@yourbusiness.com> wrote in message
> news:42455c4a$1_1@127.0.0.1...
>> rsegoly
>> Yes you can take IR shots with the Canon Digital Rebel with a R72 Filter.
>> The filter looks black and photos will show up as red in your digital
>> rebel.
>> A photo with out the filter might be shutter 125 f/8 but with R72 and
>> Digital Rebel it will be like 4sec f/8. You then can desaturate the photo
>> to
>> make it B&W with the software that comes with the camera.
>>
>>
>>
>> If your rebel is a film (35mm) camera, then you will need IR film.
>> Not sure if 35mm film Rebel will accept IR film.
>>
>> Hope that helps
>>
>
> Canon film cameras will accept IR film, but many of them, with the
> exception of the 1 series and the older (10S and earlier) bodies have an
> IR film counter, which will fog about 2mm of the bottom of the frame.
>
> --
> Skip Middleton
> http://www.shadowcatcherimagery.com
>

Archived from groups: rec.photo.digital (More info?)

"Stewy" <anyone4tennis@hotmail.com> wrote in message
news:anyone4tennis-4EDEE1.17535528032005@newssv.kcn.ne.jp...
> In article <lFd1e.857$k57.761@fed1read07>,
> "Skip M" <shadowcatcher@cox.net> wrote:
>
>> "YoYo" <itsreallynone@yourbusiness.com> wrote in message
>> news:42455c4a$1_1@127.0.0.1...
>> > rsegoly
>> > Yes you can take IR shots with the Canon Digital Rebel with a R72
>> > Filter.
>> > The filter looks black and photos will show up as red in your digital
>> > rebel.
>> > A photo with out the filter might be shutter 125 f/8 but with R72 and
>> > Digital Rebel it will be like 4sec f/8. You then can desaturate the
>> > photo
>> > to
>> > make it B&W with the software that comes with the camera.
>> >
>> >
>> >
>> > If your rebel is a film (35mm) camera, then you will need IR film.
>> > Not sure if 35mm film Rebel will accept IR film.
>> >
>> > Hope that helps
>> >
>>
>> Canon film cameras will accept IR film, but many of them, with the
>> exception
>> of the 1 series and the older (10S and earlier) bodies have an IR film
>> counter, which will fog about 2mm of the bottom of the frame.
>
> Film cameras using InfraRed usually need a shutter with metal blades -
> cloth shutters are virtually transparent to IR.

??? First, any of the EF mount Canon cameras have metal shutters, as do any
of the FD mount bodies I ever used. Second, I never had problems shooting
B&W IR film with my old Exactas, which did have cloth shutters.

--
Skip Middleton
http://www.shadowcatcherimagery.com

Archived from groups: rec.photo.digital (More info?)

In article <d28tia019p7@news3.newsguy.com>, mark@robertstech.com says...
> Stewy <anyone4tennis@hotmail.com> wrote:
>
> >Film cameras using InfraRed usually need a shutter with metal blades -
> >cloth shutters are virtually transparent to IR.
>
> Never heard that before. A couple of years ago I saw a feature in
> Outdoor Photographer on a photographer who specialized in infrared. He
> had some spectacular stuff shot with a K1000 (cloth shutter).
>
>

Since the mirror hangs in front of the shutter until the shutter is tripped,
I dont think the problem is a BIG one, unless you walk around with the mirror
locked in the UP position.

At most. if the mirror is down until you trip the shutter, the penetration of
IR through the fabric shutter MIGHT increase the exposure by a small portion
of a stop.. (the mirror is up slightly longer than the shutter is open, so
you COULD adjust for it)

I could be wrong, I havent bought a NEW SLR in 30 years. Maybe they work
differently now.


--
Larry Lynch
Mystic, Ct.

Archived from groups: rec.photo.digital (More info?)

Now that I've written all this, I think you're talking about the film
Rebel, so you can ignore it.

Cheers,

Don

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

On Mon, 28 Mar 2005 11:11:26 +0800, Don Ellis <don@donellis.com>
wrote:

>On 25 Mar 2005 23:23:45 -0800, "rsegoly" <roni.segoly@gmail.com>
>wrote:
>
>>I have a question regarding infrared photography.
>>I heard it can be done in Digital cameras as well (near IR?).
>>I have Canon EOS Rebel, is it capable?
>
>From what I read on the web, it's not very capable. The old "point the
>remote at the lens" test is not very good -- it's just the first step
>in determining if your camera is sensitive at all. It's no guarantee
>you'll get decent infrared photos.
>
>Most of the Internet links (google: infrared digital rebel) are for
>modifying the camera to remove the hot mirror.
>
>>Also I have been to a shop today and asked about filter and they showed
>>me a strange filter that actually looks from the front as a mirror,
>
>You will most likely use the R72 near-infrared filter which allows a
>small amount of visible light through. Although if you modify the
>camera, you can progress to true-infrared filters, such as the B+W 093
>(B+W is a brand name, not black-and-white). Having said that, the 093
>will give you virtually black-and-white images. The R72s will usually
>have a small amount of color to them.
>
>With my G1s, both modified and unmodified, I shoot P mode in RAW with
>AUTO white balance, then convert to TIF in BreezeBrowser with CUSTOM
>white balance (which is as simple as clicking the eyedropper on any
>point that's medium to dark gray.
>
>My guess would be that unless you plan to modify your camera, you
>would be happier trying to find a used G1 -- is there any other kind?
>-- and using that for infrared.
>
>A friend of mine has a Nikon D100 which he used once with an R72.
>Exposures were in the 5--second range on a brilliantly sunny day and
>they came out looking quite good after being run through Photoshop.
>But it was such a hassle, that's he's never done it again.
>
>Good luck.
>
>Don