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November 7, 2007
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Digital Infra-Red by mole2k Digital Infra-Red by mole2k
I wrote this tutorial ages ago when I noticed the amount of questions I was being asked on digital IR was increasing so i decided to write a tutorial that I could point people towards.
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:iconmanga-eefke:
nice tutorial, I have a question though, my camera has a max iso of 1600 and a max shutter speed of 30 seconds, so I'll never be able to use a totally black filter, but do you have an idea of another filter I can use? I mean one of 720 nm for example, would that be good?
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:iconmole2k:
mole2k Jun 13, 2009  Hobbyist Photographer
Something like the hoya R72 should work. Does the camera not have a bulb mode where you can hold the shutter open indefinitely with a remote, you have to time the shots yourself but it lets you get long exposures.
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:iconmanga-eefke:
okay, yeah I hear a lot of people who have a hoya r72. Oh right bulb mode is a good idea of course^^ Thanks! =D
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:iconmole2k:
mole2k Jun 13, 2009  Hobbyist Photographer
I probably should mention that in the tutorial that anything over 30sec needs bulb mode and manually timed!
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:iconmanga-eefke:
yeah^^
hmm I'm now looking at e-bay for IR filters, some say 'for HOYA bk61' do you have any idea what that means? and the filter is only 12 euro's ($16,80) :O
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:iconmole2k:
mole2k Jun 13, 2009  Hobbyist Photographer
I had a look about and cant actually see anything wrong with them. I've no idea what the Bk61 bit is about though. For the price it's probably worth giving it a go!
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:iconmanga-eefke:
indeed, but I'm still not sure my camera is compatible with it (it's a canon 1000d). Cause I found things on the internet about an IR cut filter on some camera's and that should be removed before making IR photos... what do you know about that?
I don't want to open up my camera and ruin it :S
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:iconmole2k:
mole2k Jun 14, 2009  Hobbyist Photographer
All dSLR's have a filter inside that cuts out IR light to varying degree's. Thats what gives you the really long exposure times when you use an IR filter as basically your cutting out both kinds of light so very very little light is actually getting through so you need a long exposure. It's possible to modify the camera by removing the IR cut filter and adding one that cuts visible light then you camera operates like normal but takes IR photos.

It will work with just an IR filter and a long exposure though :)
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(1 Reply)
:icondynasourx:
dynasourX Mar 6, 2009  Professional Photographer
:thanks:
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:iconwarren-wol:
this is great. answers so many questions that i haven't gotten around to asking.
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