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bnpndxtr
10th of November 2003 (Mon), 07:22
Does anyone know of a good tutorial for IR photography using the 10D- or can it even be done?

Thanks,

Brian

Longwatcher
10th of November 2003 (Mon), 09:54
Yes it can be done with 10D (but not D60 - don't know about 300D).

Simple tutorial based on my experience:
Get IR filter. Hoya R72 has had good results with 10D.

In broad daylight...

without the filter on,
focus on subject.
Turn lens to manual focus
Set camera to manual exposure

If have IR focus marks on lens, move lens focus as appropriate for marks.
If you don't have marks adjust focus about 10-20% in front of target (closer to camera)

Put IR filter on camera carefully avoiding changing focus point. Especially since you will no longer be able to see though lens.

Set shutter to a minimum of 4 seconds at f1.4 or 20 seconds at f8, pick one.

Take picture
Check histogram
adjust camera settings until peak of histogram centered or slightly to left of center. [this is my best setting, you may need slightly different results]

take lots of pictures, playing with focus since it will never be exactly right.

When you have taken about 50-100 pictures, take to computer and check you work. Adjust as necessary.

Notes:
- A huge depth of field helps a bunch.
- Getting people to stay perfectly still for more then 6 seconds is almost impossible.
- Channel swapping in PS makes for some very interesting pictures, but only seems to work with landscape. I find auto adjust after brightness/contrast works best to get cool looking IR pictures of people.
- The IR range of my 10D apears to be limited to around 780-800nm, so you will only get the near IR range.
- The Hoya R72 lets in some red light, but you do get true IR with the 10D, There is a Tiffen filter that supposidly has a better IR cutoff, but have not seen good examples yet.
- The cheapest way to try IR is with a 58mm filter attached to an appropriate lens (in my case a 50/1.4).

Just my experience and opinion.

Gibmeister
10th of November 2003 (Mon), 17:25
I agree with everything that Tim said. Lots of practice and hopefully you have the IR marking on your lens. That makes everything easier. I took at least 50 shots before I starting getting the focus close. This first photo is coverted to B&W obviously. Good luck and have fun.
[img]http://images.fotopic.net/?id=1254386&out=600&oq=0[img]
The second one I reversed the color channels.
[img]http://images.fotopic.net/?id=1125201&out=600&oq=0[img]

bnpndxtr
10th of November 2003 (Mon), 19:31
Thanks for the advice, all! Those pictures look nice too!

BTW, can you show me what the first picture above looks like before you converted to B/W? Just curious.

Brian

Gibmeister
10th of November 2003 (Mon), 20:31
Brian,

Here is the shot before converting to B&W. Let me know if I can be of any other help.
[img]http://images.fotopic.net/?id=1675131&out=600&oq=0