IR software filter

[karusel]

A simple question: how can a regular color photography be transformed in PS to look exactly as shot with IR filter? It should be possible by all means... right?

Soft focus lens effect can be reproduced in PS, I guess it depends on the user how good it would be reproduced.... so why not IR. I do realize there is this funky invisible light above ~700 nm, but regardless.

[Radtech1]

Try Fred Miranda (fredmiranda.com then software --> actions). He has one there. I have not used it, but I do remember seeing it.

Rad

[cmM]

NikColorEfexPro.
A whole bunch of filters. (including IR) for photoshop

[karusel]

Right, but what I really wanted to hear was: yes it can be flawlessly reproduced! 8) I remember seeing the FM's action too, but I didn't really know how well it performed...

I just tried out nik color efex pro and did not like the IR filter the least bit. I is supposed to simulate the _true_ infrared, that is, warmth radiation as seen through thermal camera...

[Longwatcher]

Just a quick note:
No matter how good the filter is, not every shot is going to work at making a Visible spectrum shot look like a good infrared shot. Every material in the world reflects or emits differently across the spectrum. So for some things a visible image is just not going to pickup the contrast and color equivilants in the same way. I suspect most IR "look like" software filters are designed to convert green to red or white primarily for the vegetation. If people or metal objects are in the shot, they will not look like they would in images actually shot in IR. Also thermal IR shots are completely different then the near-IR and short-wave IR shots of most 35mm IR film.

To me more fun is shooting the shot in near-IR from the get go. If you have 10D (and maybe Drebel) get a Hoya R72 IR filter for your largest aperture lens (like a 50/1.4) and set the camera to 10 seconds shutter at f5.6 to start in bright daylight. Note: the D60 is useless for IR and I have no clue on 1D series. Really fun is getting people to hold still for 4 to 10 seconds at a time for an IR shot :twisted:

[iwatkins]

Tim,

You mention a 50/1.4 lens. I've actually tried this Canon lens with the Hoya R72. Gives that nasty white blob in the centre of the image. :cry:

Cheers

Ian

[karusel]

You're right, Tim. I tried out a PS action, but it worked only on some specific images, like flowers and trees, but not animals or people etc. I'll get that hoya... :wink:

[Scottes]

You no, I just don't get this IR stuff. An IR shot just looks like a B&W to me.

Anyone have an IR and non-IR of basically the same image to enlighten me? (Or a link to such?)

[drisley]

Generally they do look like b&w.
However shots of vegetation are VERY different. Leaves and grass are usually white.

My absolute favourite IR galleries are by Don Ellis at kleptograpy.com

Have a look at these
http://www.kleptography.com/linegallery-irengland.htm

and these
http://www.kleptography.com/linegallery-irsaikung.htm

and these
http://www.kleptography.com/linegallery-ir093stockpile.htm

They were all shot with a Canon G1 I beleive. The last gallery really shows the difference compared to regular b&w pictures.

[Conk]

The IR photos of Don's are with a G1, in-fact his G1 has been converted specially for that purpose. I do not believe the camera can take colour photos after the conversion. Slejhamer is another person I know of that has done the same conversion with the same camera. Apparently the G1 is the perfect model for this type of conversion as the IR image quality from these camera's are second to none.
As far as a plugin or action for PS, I've yet to see anything that compares to the G1's conversion quality. There is also a Tutorial available (that I can't seem to find) that gives ok results but again, nothing comparable to the G1 results.

[Longwatcher]

A link to my sample shots
http://www.longwatcher.com/camera_test.html
Both shots were taken with my 50/1.4

The IR shot was at ISO 400, F2.8 for 4 seconds with a Hoya R72 filter
The regular shot was at ISO 100, F2.5? for 1/125 with no filter.

Please note the color shift of the plant and the concrete steps.