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More Aerochrome emulation (IR)

Not really used to this colorful response at shorter wavelength, 😎 technically it's still winter, no vegetation out. Really curious how all this will look like in summer.

 

Basis for this (not too complicated) way of development evolved in fact from my failed attempts to do the IRG stuff; I think that's kinda cool.

I used a standard yellow filter for b&w (#8 / K2, ~465nm), which is pretty light and it leaves quite a bit of blue that in turn provided the foundation for my own weird "red conversion" move. But this was very unstable, and resulted in lots of color fringing also. 😒 When I applied a deeper yellow filter (#15 / G, ~510nm) that got rid of the blue, this route did not work at all anymore.

However, after playing around with it for a good amount of time, I discovered that, after a standard R-B channel swap, I had the blue again to prepare it in a similar fashion. And it did not only work, it worked much better and seems quite stable.

 

But, surprise 😲, it's not only the looks. Being digital, it's also how things are represented. Most nature and landscape folks will know e.g. that green grass quite often contains more yellow than actual green. One challenge I have with the IRG method is the sky, it not only gets nuked very easily, it's also hard to work with.

With this alternative route, it's quite contained and consists either just of blue, or some workable aqua and blue combination. The appearance of the foliage varies of course, but usually occupies this middle ground (I really start to like on it's own), neither totally on the magenta nor on the red side, and a bit washed out, leaving the details.

The IRG way easily gets so saturated that it is borderline clipped. So this is a nice basis for tilting it towards magenta/red afterwards also. 😊

 

Issues with fringing are not to bad either (what you see here is in part due to the lens). I think I still have to adjust a little, it appears that shorter wavelength (or this mixture of visible light and IR) are just more prone to have this, and are not as clean as I'm used to with 720nm. Again, feedback of whatever sort is very welcome! 😃

 

 

Nikon D3300 (APS-C, fullspectrum mod)

Tamron 10-24mm f/3.5-4.5 Di ll VC HLD

heliopan SH-PMC deep yellow (15) filter

B+W 010 UV-Haze 1x MRC F-Pro filter

ISO100, 13mm, f/8, 1/250sec (-1.3EV)

(thus 19,5mm full frame equivalent)

single shot, handheld, manual, sweaty..

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Uploaded on February 10, 2024