RE: Canon D-30 / Nikon D1 - suitable for digital IR?

["R. C. Lacovara" <lacovara@xxxxxxxxxxx>]

Just a short comment in support of one paragraph...

At 05:45 PM 4/10/2001 -0400, you wrote:

>I have seen CCD sensors that have the IR block fitler incorporated in 
>them. They are so close to the CCD and are basically epoxied in during the 
>manufacuting phase that it would require very delicate work to remove 
>them. I for one wouldn't try it!

First off, I'm not recommending either that anyone start out in camera 
modification this way. However, I have had the need to separate lenses 
which had been cemented. After a variety of experiments, I found through a 
friend that a chemical commonly called DMSO, used by health types, is a 
remarkable solvent for many lens cements. The elements to be separated must 
be immersed in DMSO, so this may rule out the removal of IR filters from 
the CCD. However, it is useful to know that DMSO will work.

After about a week's time in a bath of DMSO, my two optical components 
separated by hand, and left a thin sheet of the original cement floating in 
the remaining liquid.

Final disclaimer: DMSO may be hazardous: I don't know. It may ruin 
electronics or other components, or dissolve things you'd rather not have 
dissolve. You are big boys and girls: I'm not responsible for your use of DMSO>

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