Series of infrared shots at Lake Geneva (10 photos) - Page 3
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Old 01-23-2010   #21
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Vicuna
 
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

Oh and BEAUTIFUL photos Very inspiring!
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Old 01-24-2010   #22
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

Thanks for all the comments.

Damsel: I do not know enough of the SD14. But I tried a few times taking infrared photos with the Sigma DP1, and while it was ok for B&W infrared shots, it was very limited for false color IR. I think this might be due to the foveon sensor reacting differently from a bayer sensor. IIRC, I paid around USD 300-350 for a used K100D Super converted to infrared.
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Old 01-24-2010   #23
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

These are beautiful - can you tell me more about the filter.
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Old 01-24-2010   #24
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

Thanks.

The IR cut off filter located directly on the sensor has been replaced by a 720nm infrared filter. With this modification, the viewfinder remains fully usable, the shutter times are back to normal, but the camera is only usable for infrared.
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Old 01-24-2010   #25
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

Thanks - is this something you did yourself or is there a place to send the camera off to for this type of modification. Is the filter/service expensive?
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Old 01-24-2010   #26
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

I bought an already converted used camera.

If you do a search on internet, you will find quite a few places offering you to convert your camera.
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Old 01-24-2010   #27
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

All of these shots are quite outstanding and very eye-catching. Great series.
I'm sure I am not alone wanting to try this myself and I have a couple of questions.
Do you need any lens filters in addition to the modified sensor or can this effect be achieved with all the lenses without additional filters?
How does your PP differ with IR images from this sensor as compared to normal images taken with your K10/20?

I have a small cache of K-mount glass and one day would like to venture into IR.
Thanks, chris
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Old 01-24-2010   #28
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

The only filter involved is the IR filter on the sensor.

The PP differs quite a bit from normal PP, especially when you do want to make color IR. There is a good explanation under http://www.clubsnap.com/forums/showthread.php?t=316576 about how it is done.

Basically, yes, the effect can be achieved with all the lenses, but there are lenses which do not work as well.

Some lenses do produce more or less pronounced hot spots:

Here you can see that the trees in the middle do show a bit of orange, which can not be seen on the other trees:


Then, you need to pay attention to the sun. The lens coating has been designed to remove reflections in the visible light, and is pretty much useless in IR. This effect is sometimes welcome:



I do hope this helps a bit.
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Old 01-24-2010   #29
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

Quote:
Originally Posted by tcom View Post
I do hope this helps a bit.
Yes absolutely. Thank you.
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Old 01-24-2010   #30
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Default Re: Series of infrared shots at Lake Geneva (10 photos)

Oh, my. These are a delight to view. Thanks for sharing! What was your setup?


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