I can't remember if there is anyone on this forum doing IR--particularly in digital. There are several doing IR on another forum I'm on. For my camera, the Hoya R72 does wonderful things. Just curious what others are using and love to see some images.

I have done IR in Black & White before and just orderd some new film.... I have not tried recreating the effect digitally yet. How about some details Diane :)

As a matter of fact, I was just looking at one of the IR galleries--here's Alan's URL http://albums.photopoint.com/j/AlbumIndex?u=895783&a=13232052&f= He's using a Hoya R72 on a Canon G1. My understanding is that some digitals just don't work very well with IR filters due to the way the chips deal with light. Now, I'm not sure if its because the G1 has outstanding low light capabilities or something else, but it works very well wtih the Hoya filter. I should have explained that I didn't mean "MY" camera per se, but the particular model. I do plan to buy the Hoya filter, but since I just ordered a new Canon 420EX external flash and a Sto-fen Omnibounce for it today, I decided to hold off S. However, these images are very compelling to me. I told him that while they are very nicely composed images, they would not have been so compelling in color. I'm not sure if its the way the red/sepia + b/w scramble your head/perceptions or what, but these grab me--particularly his #7.

This is very close to the way color IR film looks when shot and processed according to directions. Black & White IR looks totaly different. The #7 image was defenitely the best. some of the others especially #4 har a lot of noise. Perticularly in the red channel. This can be corrected in photoshop using the channel mixer (Not sure about PSP as I haven't used it). All in all this is way cool stuff... at least IMO :)

Yep, you can correct it in the channel mixer in PSP also. Yes, I did notice the red noise. Now, since you know how to do this (there are several sites on the net I have bookmarked because this is interesting stuff to me), I understand you use a slow shutter speed also. Is it the same for film??

So let me get this straight. He photographs in the dark. Or is it in the day time but using a weird filter? From what I can gather from Alpha's comment the colors of his photos weren't adjusted. When I think of IR. I typically think of the dark and spectrum exibited due to generally an objects heat. Is IR or can IR refer to something else? Bsteph

I've just spent some time on IR sites. With digitals (I'm sure film also), you can photograph at any time but the heat from the objects is what changes the appearance. He must photograph in color (that is suggested with digital, then convert to B/W which most do). I found one image on a site where coals burned quite blue with the IR--also glass walls on a building, but seems that red/ochre happens more. The infra red filters are used by digital and film people. One that works well with digital is the Hoya but there is a German one that many like also--can't remember its name. Here's an interesting URL for digital IR photography if you are interested. http://www.cliffshade.com/dpfwiw/ir.htm

Infra Red Film comes in two varieties that I am familiar with. A Black & White Negative film (Kodak HIS) and Color Reversal film (Kodak Ektachrome EIR). I have also used a B&W infra red film from Ilford, but I am not sure if they manufacture this any more. With B&W film and a dark red filter, Green foliage is rendered in light grays and white while blue skies are rendered almost black. With Color Reversal (Slide Film) the results vary widely depending on the exposure, development process, degree of push processing, the amount of infra red reflectance present at the time of exposure and the lens filter used. There is no ISO speed rating on this film as light meters do not measure infra red. Kodak recommends a base setting of 200 and bracketing your exposures two full f-stops in both directions. My experience is that the bracketing is best done in 1/3 stop increments if your camera allows. So how does this relate to exposures being made on CCDs with digital cameras? At the moment, I am not sure I am going to investigate this and will let you know after I have researched it and done some exposure tests. Meanwhile I think the following excerpt from a Kodak publication on IR film is worth noting. A great deal of confusion exists concerning infrared photography and the measurement of infrared energy (heat waves). This confusion often leads to futile attempts to detect thermal patterns through the use of infrared photography. Contrary to what many people believe, the infrared record in a photograph is not a measure of ambient temperature variation. Thermal photography cannot be done with infrared-sensitive film because it is not a thermal or heat detector, being only sensitive to the near-infrared spectral region. (Infrared Film is sensitive to approximately 900 nm) BTW IR film is not cheap. Current prices range from $15.00 to $20.00 US currency.

Oh, so the heat does NOT affect it. Well, wonder what does then--the hotter objects seem to respond differently--and you can see that in these images. Is it the light?--that sounds reasonable because the CCD's are so light sensitive. Looks like more research on my part.

Maybe this will help... Infrared is a portion of the invisible spectrum: the portion of the invisible electromagnetic spectrum consisting of radiation with wavelengths in the range 750 nm to 1 mm, between light and radio waves. It is the range between 750 and 900 nm that affest IR film. It's primary purpose was to help distiguish between collors that were really close in scientific work... Like the variations of green in a leaf. However once people like you and I stared palying with it, it bacame very popular as an artistic tool :)

Alpha, after some research and looking at a lot of IR galleries in both digital and traditional film, I decided this was something I wanted to take a stab at. I've ordered the Hoya R72. Looking forward to playing with it--and also doing some 'false color' with it also

Holy smokes Diane!!! I just checked the some prices on these puppies... That is some serious bucks for a filter. If I bouhgt one for each lens I would be out over $400.00 Just out of curiosity, where are you buying from? The place I checked was: http://www.2filter.com/ I am hoping you found a better price than this.

BTW... I ca't wait to see some of the work you do with this. Maybe when you get bored, you can let me borrow it :)

Geez, Alpha, I paid about $35 for mine--do you think I'm CRAZY?? LOL I bought mine from Adorama. Found them also at the Filter Connection--I only bought it for one lens which should be sufficient for now. Remember mine is not an SLR, but has 3x zoom--I didn't buy for my Tiffen tele or wide, but can use them with my macro lens. I bought a 49mm.

For what it's worth smoke principally does NOT have a IR signiture. At least it doesen't absorb much heat. If I get really technical from a chemical sense who knows. Depends on the gerarator of the smoke. But back to my point. Has anyone tried photographing smoke with one of these filter thingies or with IR active film. I'm courious to know how it would work. Still planning ahead for the next 4th. ( To much smoke from the fireworks. ) bsteph