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Finlay got my self to the task to do a full spectrum conversion (eg remove the internal cut filter) from my old Nikon D40 wich was
collecting dust anyway. Was easier than I thought.

DAY 1:

This is the "first light" image after the conversion:

firstlight

Its a bit shaky due to the low light condition (conversion was done in the late evening. A more proper test was done shortly afterwards:
init
And with a little color correction in Photoshop I got this result
init cc

So now I'm waiting for a infrared filter (visible light cut filter)) to arrive for further experiments. This could be an interesting endevaour
not only for traditional photography (where I got some interesting plans), but for 3d, where I want to test if its possible to get an
Subsurface-scattering mask by substracting a uv / visible light image from a Infrared Image.

DAY 2:

Got the filter, and tired to calibrated the autofocus. size is a bit higher so I might use it on my Canon some times in future  So until the filter step up rings arrive I have to manually hold the filter in front of the lens. Results look prmissing, here are two images shot with it.
filter 01

This one used cameras own auto whitebalance and some channel swapping tricks.

filter 02
Its a bit overexposed but I wanted to experiment with a custom camera whitebalance (from a grey card) and channel swapping....
can't wait to shoot some "real" stuff once the additional hardware arrives.

And the first experiments to get an actual hdri with manual bracketing.
(The D40 does not do auto bracketing, so sorry for the alignment errors... might use the old bracketing program I've wrote a few years back, once I got a hand free to control the netbook)

Also the original features dust on sensor, since its now bare (without a protection) I have to find a save way to remove it carefully

filter 03

I also tested Affinity Photo wich does allow me to whitebalance (and stack them) on the hdri, wich gives also interesting results

filter 05

The original hdri for your own experiments can be found here

And the final one for today wich uses a slightly different method to color balance. (Shot with the Helios)

filter 04