Re: Converting JVC digital camcorder to IR sensitive camcorder

[Otto Giesenfeld <otto.giesenfeld@xxxxxxxxxxxx>]

--On den 2 januari 2000, 20:38 -0800 Rolland Elliott
<liquidriver@xxxxxxxxx> wrote:

> So I opened it up a 3rd time and took out the paper
> spacer (about 0.5mm thick) and I also REMOVED an
> aluminum spacer in the camcorder to make the CCD about
> 1 mm closer to the lens.
> Then I put the camcorder back together for a third
> time ( I was getting pretty good at taking it apart by
> now).  
> Focusing worked great! Finally! It still seems to me
> that the CCD should have been moved farther away,
> perhaps someone can explain IR focuing correction to
> me so I understand it better.
> 

The focus problems were probably not caused by a lack of IR correction but
by the fact that you removed a piece of glass between the lens and the CCD.
An alternative solution would have been to insert filter glass of similar
thickness where the IR-blocking filter was. (A visible-light blocking
filter perhaps.)

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