| Joined: | Mon Apr 2nd, 2012 |
| Location: | South Lakeland, UK |
| Posts: | 4066 |
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Last night I went back to Photoshop and renewed my search for the CA rectification/control panel. Eventually I found it! It's hiding in the filters menu under 'Lens Correction...' I had stupidly been searching in the 'Image' menu!
Using the lens correction panel I experimented with the sliders and found the best combination. It hasn't removed the grey fringe but it has largely eliminated the very indistinct and annoying cyan and magenta fringes. There are some traces remaining but not worth bothering with.
I took a look at Bj¸rn R¸rslet's lens database, he mentions that CA isn't a significant issue with this lens, so I can only surmise this instance is provoked by the extreme lighting conditions which exist at 9pm in the evening when the sun set at 4pm in a full moonlit sky? Pushing the limits!
Before CA adjustments:
After CA adjustments:
Given the D200 is not recommended for low light photography I am really very impressed by the image I have obtained, I don't feel the noise is excessive, when compared with the iPhone image I put at the beginning of this thread it's wonderful. I have been trying to retain the sense of a moonlit scene, rather than a daylight scene. If I made the adjustments available I can actually make it look pretty much like a daytime scene. It shows the extremely sensitive nature of the sensors even an 'antiquated' one like the D200.
What film would do this without golfball grain clumps?
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Robert.