Better "Aerochrome" (SD1) with red/yellow/orange filters

Started 3 months ago | Discussions thread
OP HiddenRealms New Member • Posts: 15
Re: Better "Aerochrome" (SD1) with red/yellow/orange filters

D Cox wrote:

My experience is limited to exposing a couple of rolls of the Kodak film back in the 1960s, so I can't help much. But looking at the diagram tells me that the filter needs to block blue and pass IR. It would appear yellow to the eye, but various yellow filters may or may not pass IR. The Kodak Wratten Filters book will help, but you may need an interference filter.

Can the Foveon distinguish between red and IR, as the film does ?

Once you have three colours for green, red and IR, you can swap channels around in software to get a pleasing result.

Film with no filter:

Film with orange filter:

Have fun !

Don Cox

Thanks for sharing these pictures.

It's interesting that I can get almost the same look (as with orange filter) with the red filter (on the SD1).

Like your Aerochrome photos, most of the ones I see on the internet have a color cast. I have now adjusted the white balance of your orange image in Photoshop - and look: The taillights and also the traffic signs suddenly no longer have this strong yellow tone, but go more into a "washed out" red/orange... similar to my SD1 image with the red filter...

If you use an orange filter (like the Tiffen 16 for example) with the SD1, red colors stay red...

Hmm...

Red filter, CWB, Foveon Classic Blue,... just SPP processing, nothing else

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