You have to take off the IR cut filter, and add clear glass of the
same thickness, otherwise you can't focus properly.

When you are shooting, if you want to only shoot IR, you still need an
IR filter to cut out the visible and UV light.  Likewise if you want
to shoot visible, you need a filter that only passes visible light.
Without a filter, you get visible, IR and UV mixing together, and your
colors go wonky, and they'll never look realistic.

On Wed, May 25, 2011 at 5:19 AM, sky <s...@eftel.net.au> wrote:
> A guest at the club had a talk about this very subject so will pass one what 
> i can remember of it.
> Apperantly, the sensors are very senative to IR but the camera manufractors 
> put an IR cut filter in front of the sensor as part of the sensor assembly.
> All that is required is to remove that IR cut filter and you have an IR 
> camera. No need to add IR filters to the lens once this is done.
> Most camera repair places can do this for you.
>
> I haven't researched this, only going by what this guy said. He has taken 
> many IR photos with his modded camera.
>
> James
>
>
>
>
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