Using a Canon Rebel XT in IR only mode

PhotoArtist

Hello Andy Williams,

I saw your fantastic infrared images on the LDP
site. Great work. Ihave a Canon 20d which I use for
"straight" images and just purchased a Rebel XT which I
had LDP convert to IR only. When talking with Dan @LDP
he mentioned your name and said that you had a certain
workflowwith your images.

Now I haven't received my Rebel yet, but Dan was
saying something about the Blue and Green channels not
getting as much information as the Red channel. I was
wondering what your in camera workflow was ( how you
shoot an image, exposure etc.) and then what your post
camera or Photoshop workflow entails. Do you enhance
the B & G channels and how?

I would appreciate any information you can afford
me to lessen mylearning curve.


Thanks

James A. Crawford
"Crawf"

My website
http://www.absolutearts.com/portfolios/c/crawf/

The Show at SLO Art's site
http://www.sloart.com/cgi-bin/gallery/cart/ProductList.cgi?F=l&C=JAMES%20CRAWFORD


Another site (2 pages):
http://www.artenvisionary.com/artist%20pages/crawford.htm

Andy

thanks for joining and asking your question here!

my workflow is really simple:

1) shoot in raw, usually with -1/3 or -2/3s e.c.

2) open in adobe camera raw, select the black eyedropper and click on a neutral area (usually in the sky) this sets the wb perfectly, and nearly always nails the exposure right, too, but if i need to i adjust the exposure in acr.

3) i don't mess with the channels, i tried it for a while but found that a simple channel mixer of 50/50/0 and tick the monochrome box, works great for a bw conversion.

4) i'll apply any needed curves adjustment here for added contrast

5) sometimes i'll apply a toning layer.

that's it!

PhotoArtist

andy wrote:

thanks for joining and asking your question here!

my workflow is really simple:

1) shoot in raw, usually with -1/3 or -2/3s e.c.

2) open in adobe camera raw, select the black eyedropper and click on a neutral area (usually in the sky) this sets the wb perfectly, and nearly always nails the exposure right, too, but if i need to i adjust the exposure in acr.

3) i don't mess with the channels, i tried it for a while but found that a simple channel mixer of 50/50/0 and tick the monochrome box, works great for a bw conversion.

4) i'll apply any needed curves adjustment here for added contrast

5) sometimes i'll apply a toning layer.

that's it!

Thanks Andy,

I'll give it a try. BTW those are great shots

Crawf

Andy

luminosity toningn
forgot - here's' how i tone:


ctrl-alt-~
new fill layer (solid color) and choose the color you want
chg layer blend to "color"
ctrl-i to invert (try it either way)

now use opacity, mask, either or both to fine tune

PhotoArtist

Smallest Apeture?
Andy,

Thanks again for your toning workflow. Another question: What is the smallest apeture you would use in shooting with the Rebel XT. I tried f22 and saw banding in the skies. Someone suggest f11. Love to hear your thoughts.

Thanks
Crawf

Andy

PhotoArtist wrote:

Andy,

Thanks again for your toning workflow. Another question: What is the smallest apeture you would use in shooting with the Rebel XT. I tried f22 and saw banding in the skies. Someone suggest f11. Love to hear your thoughts.

Thanks
Crawf

for infrared? i routinely shoot at f/8 or f/11 with my 16-35L - plenty of dof and can still handhold at 1/500th or thereabouts banding at f/22? i'd like to see that - give us a 100% crop please, and the full downsized pic for reference - plus exif

PhotoArtist

k, Andy,

I hope this is what you were looking for. I am a newbie to these message boards, so bear with me.
Lens 10-22mm @ 18mm, ISO100. shot at f22, 1/30 although same results with 1/40 as far as the banding

PhotoArtist

Banding
Here is a section of the banding. Doesn't seem to show up as much here as on my 'puter

PhotoArtist

In Addition
I should also mention that this is straight from the Raw image with nothing done. Also, yes there was a lot of dust on my sensor which I have since cleaned.

Andy

PhotoArtist wrote:

k, Andy,

I hope this is what you were looking for. I am a newbie to these message boards, so bear with me.
Lens 10-22mm @ 18mm, ISO100. shot at f22, 1/30 although same results with 1/40 as far as the banding

let's see a shot at f/8 or f/11 please?

PhotoArtist

Finally was able to do some shooting!!!!
: Hi Andy,
Finally I was able to do some shooting. I did a little experimenting and find that for me, f8 is the optimum apeture to shoot for the Rebel XT infrared camera. No Banding in the sky and the sky is also very black. Here is an example of my experiment. I still have a way to go before I am completely happy with an infrared image. But with some pratice I will get there. I also need to find more shooting time and the right subject matter.

Crawf

Andy

PhotoArtist wrote:

: Hi Andy,
Finally I was able to do some shooting. I did a little experimenting and find that for me, f8 is the optimum apeture to shoot for the Rebel XT infrared camera. No Banding in the sky and the sky is also very black. Here is an example of my experiment. I still have a way to go before I am completely happy with an infrared image. But with some pratice I will get there. I also need to find more shooting time and the right subject matter.

Crawf

looks goot - nice and contrasty, love the black sky