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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:
manga-eefke Featured By Owner Jun 13, 2009  Student
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 Featured By Owner 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:
manga-eefke Featured By Owner Jun 13, 2009  Student
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 Featured By Owner 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:
manga-eefke Featured By Owner Jun 13, 2009  Student
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 Featured By Owner 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:
manga-eefke Featured By Owner Jun 14, 2009  Student
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 Featured By Owner 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 Featured By Owner Mar 6, 2009  Professional Photographer
:thanks:
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:iconwarren-wol:
warren-wol Featured By Owner May 20, 2008
this is great. answers so many questions that i haven't gotten around to asking.
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:iconariseandrejoice:
ariseandrejoice Featured By Owner Feb 11, 2008  Professional Photographer
thanks for the info! much appreciated.
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:iconjackmcintyre:
JackMcIntyre Featured By Owner Dec 18, 2007   Photographer
I need help! I've just bought a Cokin P007 IR filter to use, but I can't get it to work properly.

I've taken a picture with the right exposure, as everything is bright red. But when I take the picture there are bright rings around the photo and large bokeh.

Why is this happening? Here's an example shot: [link]
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:iconmole2k:
mole2k Featured By Owner Dec 18, 2007  Hobbyist Photographer
The red effect is due to the white balance being wrong. Its quite common that the shots come out red, if you shoot in raw it allows you to change the white balance afterwards giving you a little bit more room to get the colours balanced.

Im not quite sure what the blue flare is being caused by, its possibly a light leak. Is the filter a screw in one or is it a square one in a holder. It might be work trying to see if there is any light leaks as even the smallest leak will have detremental effects on the photo. It might also be caused by light leaking in through the viewfinder, it might be worth blocking it up during the long exposures to help erradicate light leaking.
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:iconjackmcintyre:
JackMcIntyre Featured By Owner Dec 18, 2007   Photographer
Viewfinder leak seams right, as it looks like a reflection of the lens on some photo's. I'll give it a try by covering up the VF and see what happens.

Its a square slide-in filter by the way, Cokin P007.

Thanks for the help!
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:iconmole2k:
mole2k Featured By Owner Dec 18, 2007  Hobbyist Photographer
If the viewfinder isnt the issue you could try going around the filter with some bluetac to help seal it.
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:iconlemnosexplorer:
LemnosExplorer Featured By Owner Dec 9, 2007  Professional Artist
fantastic info. Would also be great to give if you know some info on best way to modify or which filter does best job in IR modified cameras nowadays.

I added you a link in my journal
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:iconmole2k:
mole2k Featured By Owner Dec 9, 2007  Hobbyist Photographer
Sadly I dont have any experience with IR modded camera's, I do hope to mod my 20d when I can afford a new camera.
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:iconsyeuk2002:
syeuk2002 Featured By Owner Nov 8, 2007  Professional Photographer
Just what I've been looking for.
Thanks. :)
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:iconmole2k:
mole2k Featured By Owner Nov 8, 2007  Hobbyist Photographer
Thanks :)

I've been intending on writing a processing tutorial for digital IR photos as I find it is quite different to conventional photographs.
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:iconjohnnysix:
JohnnySix Featured By Owner Nov 8, 2007  Professional Artist
Wow, great stuff! Didn't know IR images were even possible with conventional cameras. Nice work, love how the vegetation comes out snowy white!
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:iconmole2k:
mole2k Featured By Owner Nov 8, 2007  Hobbyist Photographer
They are possible it just takes a bit of time and technique to get it working.
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:icon6th-gear:
6th-gear Featured By Owner Nov 8, 2007  Hobbyist Photographer
nice man!

how much $ is an infra-red filter?
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:iconmole2k:
mole2k Featured By Owner Nov 8, 2007  Hobbyist Photographer
They range from quite cheap to silly expensive.

The one I have cost me about $60 from hong kong but a 77mm Hoya R72 which is one I want to get costs quite a lot, in the $140+ region which is why I went for the cheaper filter to start with as I wasnt sure if I would like doing IR stuff.
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:iconjhubert:
jhubert Featured By Owner Nov 8, 2007  Hobbyist Digital Artist
Added to the Art Tutorials Wiki.
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:iconmole2k:
mole2k Featured By Owner Nov 8, 2007  Hobbyist Photographer
Cool :)

Nice wiki too, I've it bookmarked!
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:iconjhubert:
jhubert Featured By Owner Nov 8, 2007  Hobbyist Digital Artist
Thanks for the praise!

BTW, if you know of any other good tutorials, please don't hesitate to add them to the wiki as well - I've set permissions so that anyone can edit it.
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:iconmole2k:
mole2k Featured By Owner Nov 8, 2007  Hobbyist Photographer
I dont know of any off-hand but if I write any further tutorials I'll add them to the wiki :)
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:iconjhubert:
jhubert Featured By Owner Nov 8, 2007  Hobbyist Digital Artist
Thanks!

If you do that, just read the Improvement Guide - it should tell you everything you need to know for that.
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:iconfinkycake:
finkycake Featured By Owner Nov 7, 2007  Hobbyist Photographer
bravo!
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:iconmole2k:
mole2k Featured By Owner Nov 8, 2007  Hobbyist Photographer
:)
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