My experiments in IR

[tsk1979]

I started off with buying the cheap filters from EBAY.
I intended to get the 720nm equivalent, but instead got a 850nm equiv which actually does not give any false color.
Later I got another which was actually the 690nm, or dark red filter.
Finally I was able to lay my hands on a filter closer to 720.

The shot below is from 350D(stock) + 50mm 1.8 lens. I cannot use the 18-55 non IS lens which is kit lens due to hot spot issues.
So my landscapes are limited to 50mm.
Guess when I upgrade my lens collection to include the Tokina 11-16 F2.8, I will be able to do wide angle IR.
Till then, here are a couple
http://tanveer.smugmug.com/Travel/Kesroli-Alwar-Sariska/IMG9568finalnohue/515163421_LJFkG-L.jpg

http://tanveer.smugmug.com/Travel/Kesroli-Alwar-Sariska/IMG9703finalbw/515159145_78RMu-L.jpg

[Cobra351]

Looks like a good start to shooting IR. Careful though, it can be very addictive! :cool:

[FelixDeSouze]

Nice images! I like.. Is the IR a filter??

[ViciousCircle]

Nice images! I like.. Is the IR a filter??
I'm guessing he is using a modded camera.

[ThreeGuysPhoto]

I'm guessing he is using a modded camera.

It says stock body... Super long exposure?

I'd love to have a IR modded body. IR and high contrast (Tech Pan) were my favorite films to shoot w/ 35mm film.

[FelixDeSouze]

Oh! So is it a hard mod or a software mod??

[ThreeGuysPhoto]

Oh! So is it a hard mod or a software mod??

There is no software mod (aside from PP tricks that don't really give you the IR look). There is a IR filter in digital bodies. The mod removes the IR cutoff filter and replaces it with one that doesn't block IR. The quality of the resulting IR photos depends on the camera sensor. Some do better than others. Once it is modded it will only really work as an IR camera unless modded back.


I've also heard of using a Red filter and getting IR shots with extreme exposure times with certain DSLRs.

[FelixDeSouze]

Oh I see.. Seems a little bit over done to do your camera and make it only IR.. Obviously if you have an old camera you can use then it won't be too bad.. Nice images tho!!

[MikeFairbanks]

So let me get this straight: You are capturing, infrared light that the human eye cannot see, right? And did you desaturate to get black and white, or is that what infrared looks like?

I'm actually teaching a unit on light (elementary school) and telling the kids that most light is invisible to the human eye.

I'm curious.

[tsk1979]

I'm guessing he is using a modded camera.

It says stock body... Super long exposure?

I'd love to have a IR modded body. IR and high contrast (Tech Pan) were my favorite films to shoot w/ 35mm film.
Yes, I did not modify my camera. It was a 2 second exposure in bright sunlight. Normally the shutter speed I get in such light would be 1/2000 or something
Oh! So is it a hard mod or a software mod??
Well no software mod except white balance. I did not even desaturate!
Oh I see.. Seems a little bit over done to do your camera and make it only IR.. Obviously if you have an old camera you can use then it won't be too bad.. Nice images tho!!
Nope, I did not do anything to the camera!
So let me get this straight: You are capturing, infrared light that the human eye cannot see, right? And did you desaturate to get black and white, or is that what infrared looks like?

I'm actually teaching a unit on light (elementary school) and telling the kids that most light is invisible to the human eye.

I'm curious.
Well I did not do any desaturation. The images are actually color images, but at that end of the spectrum, when looked at RAW, the images look pink/red. Set white balance on the leaves of trees, and the entire image goes to B&W.
However if I use a 720nm filter(which I found was actually a 690nm or 700nm) I get vivid strange colors, here are a few samples
http://tanveer.smugmug.com/Travel/Himalayas/Manali-Rohtang-May-2009/IMG9768/533058935_HCwh4-L.jpg

http://tanveer.smugmug.com/Travel/Himalayas/Manali-Rohtang-May-2009/IMG9851/533925423_geSaj-L.jpg

http://tanveer.smugmug.com/Travel/Himalayas/Manali-Rohtang-May-2009/IMG9854/533926237_D9Hq9-L.jpg

http://tanveer.smugmug.com/Travel/Himalayas/Manali-Rohtang-May-2009/IMG9861/533916955_vTzVB-L.jpg

[pantherphotos]

The images are actually color images, but at that end of the spectrum, when looked at RAW, the images look pink/red. Set white balance on the leaves of trees, and the entire image goes to B&W.


I have a Hoya R72 IR filter that I started to play around with yesterday. All of my images are pink/red. Do I set the WB on the leaves of trees before, or after, I take the IR image? I shoot in RAW, so should I take an IR image, then in DPP, use the dropper to set the WB off of tree leaves? Thanks for the help, just trying to figure it out. :D

[Picture North Carolina]

I started off with buying the cheap filters from EBAY.

Sad. You have no idea how many people I run across that get ripped off by the cheap IR filters sold on ebay that are just red pieces of glass. If anybody is interested in IR, get a good filter from a good vendor. Don't get ebay-ripped like so many others have

It says stock body... Super long exposure?

I'd love to have a IR modded body.

Then watch the ads here! Sometime in Feb. I'll probably be putting a modded 20D (Lifepixel) up for sale.

[proinwv]

Your images look like the IR I have done using Kodak HIE and a B+W 092 filter, which is opaque to natural light. You have an excellent representation of IR as shot on that film.

However, your digital technique to get there has me somewhat confused. Would you kindly spell it out for my old mind.

Thanks

[Old Coot]

I'm actually teaching a unit on light (elementary school) and telling the kids that most light is invisible to the human eye.

Forum sidetrack in 3..2..1...
When I taught light and energy, I picked up a black light and a heat lamp to show the opposite ends of the spectrum- infrared= "In front of red" and ultraviolet= "after violet" in the rainbow. The kids loved it when I gave them a piece of plain white paper to color a picture on and then turned the blacklight on it. Highlighters are fun with blacklights too.