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Thread started 04 Dec 2020 (Friday) 21:16
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Infrared uses?

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photoguy6405
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Dec 04, 2020 21:16 |  #1

Are there any common commercial uses for infrared photography other than the cool factor? Just curious.

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joeseph
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Dec 05, 2020 22:14 |  #2

Not sure about common, but a couple of years back my IR-converted 1D2 got borrowed by the local museum folks to photograph an Egyptian sarcophagus to try & record some very faded hieroglyphs. Was a very cool experience as I got to watch how they work & hopefully they've forgiven me for breaking a boom stand!

some fairly old canon camera stuff, canon lenses, Manfrotto "thingy", and an M5, also an M6 that has had a 720nm filter bolted onto the sensor:
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joeseph
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Dec 08, 2020 02:39 |  #3

shot from the shoot:

Canon EOS 1D Mark III • Canon EF 24-70mm f/2.8L USM @24mm • 1/50 • f/2.8 • ISO 1600
IMAGE: https://photography-on-the.net/forum/images/hostedphotos_lq/2020/12/2/LQ_1077062.jpg
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some fairly old canon camera stuff, canon lenses, Manfrotto "thingy", and an M5, also an M6 that has had a 720nm filter bolted onto the sensor:
TF posting: here :-)

  
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petrochemist
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Feb 06, 2021 11:16 |  #4

Perhaps not particularly commercial but there are loads of uses in forensics.
IR can see through many inks & can spot the difference in inks used to 'adjust' cheques etc.
With the correct lighting it can also be used for showing blood & other biological liquids on surfaces where cleaning/visual light obscures them.

I've had a few places where it's revealed things otherwise hidden, such as eyes behind sunglasses (and loosing all the advertising logos on the cat suits) in this shot:

Panasonic Lumix DMC-GF2 • Olympus M.Zuiko Digital 17mm f/2.8 @17mm • 1/800 • f/9 • ISO 200
IMAGE: https://live.staticflickr.com/2930/13972162589_79b7c77bc8_b.jpg
IMAGE LINK: https://flic.kr/p/nhEZ​9Z (external link) BTTC grid in IR (external link) by Mike Kanssen (external link), on Flickr

It can show subcutaneous features including tattoos that have been removed, veins...

Showing distant features (the lower shot being IR compared to the top B&W)
IMAGE: https://live.staticflickr.com/326/18657505874_0043a404a2_b.jpg
IMAGE LINK: https://flic.kr/p/uqGA​tL (external link) merged oban view bw small (external link) by Mike Kanssen (external link), on Flickr

It also been used a lot to show the health of plants...

And off course the ability to shoot in total darkness:

Sony DSC-V1 • fixed lens @18mm • 1/20 • f/3.5 • ISO 2500
IMAGE: https://live.staticflickr.com/8705/16786870491_2ca9cbc137_b.jpg
IMAGE LINK: https://flic.kr/p/rzp6​Kz (external link) nightshot portrait (external link) by Mike Kanssen (external link), on Flickr

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Infrared uses?
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