| Moderated by: chrisbet, | Page:   1 2 3 4 5 6 |
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| Night Time Photography - Page 6 | |
| With D200... | Rating: 
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| Posted: Wed Dec 2nd, 2015 02:40 |
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51st Post |
Eric
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Robert wrote:Eric wrote: Well it's a long time since I did this sort of thing but I would suggest trying to create a selection mask on a channel, saving it, and applying it to the errant channel and deleting the inverse. Need to sit at the computer and think/work it through...but today I am tree pruning.
____________________ Eric |
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| Posted: Wed Dec 2nd, 2015 04:15 |
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52nd Post |
Robert
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No great rush Eric, this is really just an exercise for the future. I have fixed this image manually as good as I need it. Enjoy your pruning! My rose 'Louisa' is in dire need of savage pruning, it's almost filling my tiny garden. 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?
____________________ Robert. |
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| Posted: Wed Dec 2nd, 2015 13:41 |
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53rd Post |
Eric
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So ...using the CA option in Photoshop, does it remove the line along the hillside?
____________________ Eric |
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| Posted: Wed Dec 2nd, 2015 14:02 |
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54th Post |
jk
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I am betting yes but I dont know!
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Wed Dec 2nd, 2015 14:03 |
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55th Post |
Robert
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It takes the colour out of it but the line remains.  You can just about see it at the right hand side in the CA control panel images above.On the skyline it's pretty easy to clone out but in the tangle of twigs and branches in the tree I gave up and areas of grey remain where the gaps are too tight and too numerous to spend that much time on. I feel the grey patches detract from the image somewhat. I am still a bit unsure about the image as a whole, I like the effect but not sure I have made the best use of the capture I made, I have got too hung up on the CA, or whatever it is and have rather lost the plot on the image itself. I think I am developing the skills I need, so that if I ever do see a full moon, a clear sky and little or no wind up there in Glenridding, or elsewhere, I might actually manage to capture something worthwhile... The site where I am taking the pix is a long way from here, ~35 miles or so, I suppose there will be comparable places much nearer home but not sure where! Perhaps any dark hillside skyline would do, after dark with a full moon and no clouds... Try other bodies and other lenses at various settings. Maybe wide open isn't best for CA? I need to learn more about it.
____________________ Robert. |
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| Posted: Wed Dec 2nd, 2015 14:29 |
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56th Post |
jk
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Have you used the Content Aware Brush for this? It works for these complex pieces.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Wed Dec 2nd, 2015 14:33 |
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57th Post |
Robert
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Not sure... I have been using the stamp tool, sampling from very close to the same place I am removing the grey line. Not clear about the content aware brush.
____________________ Robert. |
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| Posted: Wed Dec 2nd, 2015 14:38 |
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58th Post |
jk
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Just paint and it wil resolve.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Wed Dec 2nd, 2015 14:42 |
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59th Post |
Robert
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Well, this is about my best effort, I don't know if I have succeeded or not but there it is...
____________________ Robert. |
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| Posted: Wed Dec 2nd, 2015 16:25 |
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60th Post |
jk
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That looks much better. The haloing on the hillside is almost gone.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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