I am now starting to standardise my post-shot workflow, which seems to be working well. I don’t understand colour swapping impact enough yet to really tune that step, but thats next.
My usual processing, once the RAW image is out of camera and on the computer is as follows. Apple’s Aperture3 runs the main process, only ding a few critical external steps, which then come back into Aperture.
- Aperture3 – Set White Balance
- Photomatix – Make the HDR composite (if an option)
- GIMP – Basic Colour Swap – usually just R<>B
- Aperture3 – Cropping/Straightening
- Aperture3 – Adjusting composite exposure
- Aperture3 – Adjusting 1 to 3 individual colours (‘hue”): saturating/desaturating, moving the hue, increasing/decreasing the luminosity and range.
- Aperture3 – Final tweak to contrast, mid-contrast etc.
Shooting more at 590nm has meant greater range of colour to process and play with. Getting to understand what is “colour” has been extremely helpful (and was not something I really understood before). Adjusting the individual colours, as part of the workflow, is where understanding the relationship of hue, luminosity, saturation really comes in. There are a few good articles on the web on this, but not many. I will post ones up as I find them.
Richmond afternoon – 590
Another of Richmond this afternoon.
590nm, colour swapped.
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Row boats – 590
Row boats at Richmond.
Modified Olympus e-PL2, 590nm sensor filter. HDR processed (x3 shots +/-1EV). Colour swapped.
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Richmond and cotton sky 2 – 590
Richmond and cotton sky 1 – 590
Richmond this afternoon. Top image is straight 590nm, channel swapped. The bottom image is 850nm.
Modified Olympus e-PL2 590 sensor filter; plus an 850nm lens filter for the B&W image.
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HMS Belfast and the City – 590
HMS Belfast and The City, London.
Modified e-PL2 590nm sensor filter. Colour swapped R<>B and desaturated.
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Southbank Offices – 590
Workers at the Southbank, London
Modified Olympus e-PL2 590nm sensor filter.
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Finally basic Red<>Blue colour swapped – which is a bit pointless with 850nm, as you can see.
Same shots now processed as B&W (simple desaturation). It shows the greater contrast 850nm produces with the sky (the image on the right), compared to 590nm (the left). However, it also has less detail on the tree.
Two test shots taken with the same camera, a modified Olympus e-PL2 with a 590nm sensor filter. The one on the left is straight from the camera (just a std UV filter) and the one on the right is with an additional 850nm lens filter.
Left is f/5.6 1/500sec, Right (with the 850 filter) is f/5.6 1/160sec – just under 2stops lost with the 850 filter.