Did it once with the 10 D and 50mm lens. Used a Hoya IR 72 filter. You have to pretty much compose your scene, lock focus and then add the filter. It's a pain in the .... Shutter speeds are in the 8 second range, too. Many lenses will result in a severe "hot spot" in the center of the photo ( due to coatings on the lens ).

Here's the pic with the 10D / Hoya IR 72 combo

http://www.pbase.com/melaniekipp/image/30259729

I only have IR experience with my Nikon D70. This camera seems to do just fine with autofocus. Also, I keep my Hoya R72 IR filter on the camera and use the LCD for composing. I keep deleting the last picture taken until I like the composition. During the composition "cycle" I keep the ISO at the highest setting so the in-between shots are taken at a fast shutter speed. I set my ISO back to where I want it before taking the final photo.

Hi Frans,
What does the increase in ISO do. Does it let you compose through the LCD with the filter on? But wouldn't you still have to mount the camera on a tripod to shoot the actual frame you'll be using? Can you describe more of your technique and why?

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Hi Frans,
Does it let you compose through the LCD with the filter on?

I am pretty sure he's looking at the image on the LCD "after" the shot, deciding if the composition is as desired, and deleting if not. The camera doesn't allow a live preview on the LCD.

Sorry, I meant compose through the viewfinder. I know that the LCD doesn't show the image until after it's been taken. I'm questioning what the high ISO does.

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Sorry, I meant compose through the viewfinder. I know that the LCD doesn't show the image until after it's been taken. I'm questioning what the high ISO does.

:-) I imagine it allows faster shutter speeds. I would suspect at a price of increased noise. I hope to purchase a converted IR DSLR camera sometime soon. This would allow for handheld IR shooting.

But the best quality IR pictures are taken at the lowest ISO.

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But the best quality IR pictures are taken at the lowest ISO.

I would agree with you 100%. When I shot IR ( Oly C-2100 UZ and Minolta Dimage 7 ) I shot ISO 100. Tripod. I did like those cams for IR because you could compose with the LCD. I did a little IR with The Oly E20, but I had to compose, lock focus then add the IR filter. It was a bit of a hassle.

Thanks... I think I am going to have to get me a Hoya filter and try it out. Nice photo, BTW.

Just curious: I have read other places that the hot spot may be caused by the viewfinder not being covered during the exposure, thus letting extraneous light leak on. Have you tried covering the viewfinder?

-EdT.

To Larry and others:
For IR, I always use a tripod, given exposure times of say 2 to 10 seconds. I look on the LCD after I take a test shot at the highest ISO setting and delete it again. I keep doing this untill I like the composition. The high ISO setting results in the shortest possible shutter speed so I don't have to wait seconds to see the results of the test shots. I also could open up the lens, but on the D70 that's a little more work. I keep the viewfinder covered so there is no stray light getting onto the sensor. I have found that when I increase the ISO beyond the lowest 200 value, I get noticeable noise.

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Thanks... I think I am going to have to get me a Hoya filter and try it out.

Or, maybe not. Instead, I ordered a Cokin IR filter (P007 - I think it is an 87C), and also got a 52mm adapter for my Sony CD Mavica 400. When they come in, I will have a new thing to play with

-EdT (who is now quoting himself! )