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| p.3 #10 · Paris with DP2M and Nex 7 |
I wrote, about passport and profiles:
With better I mean images much closer to what I saw when taking the image and thus in need of less adjustments during the PP.
I usually use my own made custom dual illumination profiles. These profiles are made for each lens and camera combo using two different images of a GCC chart, for example one taken in halogen light and one in the shadow a clear day. According to X-rite the result is a profile suitable for a lot of lighting situations.
My earlier experience is that the Passport software is not very scientific. I use it all the time as I think I get better starting points for further post processing by giving me a reasonably consistent starting point. Load the image in Lightroom or ACR, apply the profile instead of using the Adobe Standard profile, white balance.
Does it really work or is the function just serve the purpose of satisfying the photographer having spent money on the system? In most cases it works, and pretty well to that. In other I'm not so sure. I don't know if it possible to do anything out of this experiment but as I performed it you can as well have a look:
I put the camera on tripod, placed the GCC under a bulb, mounted a flash and fired away a couple of images with the camera in manual mode. I took three series of images making sure I could get something possible to work with exposure and blend-wise. All images got their correct profile applied, then they were white balanced (patch 22) and then I adjusted the "exposure" until patch 19 showed a value around 200. None of the images was adjusted for exposure more than a third of a stop.
I see quite some differences between the nine images, and in all the three series as well. Oh well. Maybe somebody can tell me what I did wrong, or if Passport, objectively, is useless. All I know at this moment is that most often prefer the colors with my custom dual light profile when I process my images. It happens that I see an odd colored image and then discover I forgot to apply the profile.