Experimental (semi-fullspectrum)

Ok, so I could not leave it alone, and went out (immediately) to do some more test shots with the first IRG attempt Aerochrome setup.

Again, did not follow Wong's algorithm, but mangled the photos on my own in some way.

The response is pretty weird, some vegetation stays kind of green (but with some red or pink in there which makes it darker and a bit brown-ish), but withered grass, dry leaves on trees, on the ground (brown stuff mostly) get pretty intense; also actual red or organge things that are not organic reflect very strong.

It was overcast so everything is a bit muted and there was no way of getting to this bright pink look with this "method".

 

I did use a different UV filter, not expecting to make any difference, and it didn't. There is all this talk about altitude, that there is more UV radiation (which makes sense to me, less atmosphere to pass through), but why the heck should that matter for a cut-filter? It does it's thing at a certain wavelength, with a transmission curve of a certain shape and threshold etc., and ..

Anyway, I already identified some major errors with my approach that a doable, and then probably some more on top of it 😜, stay tuned..

 

 

Technically, it's a 7 piece pano, cylindrical stitch, finished off with 14663 x 4256px, ~62,4MP.

 

Nikon D90 (APS-C / DX, fullspectrum mod)

Minolta MD ROKKOR 28mm f/2.8 prime

Fotodiox Pro MD - Nik adapter

BEWETAR 49 ES UV-haze 1x filter

KOOD 49mm YELLOW filter

ISO200, 28mm, f/8, 1/250sec (-0.7EV)

(therefore 42mm full frame equivalent)

manual focus, tripod, 3-way head

Done