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Old Jun 1, 2010, 5:09 PM   #1
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Default Unsharpen Mask

Hiya! I am very, very new to DSLR... yep, been locked into a time-warp, using film all my life. I just got a new DSLR and PSE8. I live in Finland (but not Finnish!)... I am surround by trees, lakes, and saunas! Since there is so much green in the summer-time, I wanted to specifically use this path which is about 100 metres/yards outside my house. One photo is the original, the second is with with the unsharpen mask. Is this ok? Or are there any suggestions?
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Old Jun 2, 2010, 3:46 AM   #2
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Sharpness looks fine but the colours have changed - they're cooler in the processed version.
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Old Jun 2, 2010, 8:37 AM   #3
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Thanks Martin. I will try it again. How is this for using the unsharpen mask??? Again, I chose this subject because in the forest there is so much green, so I want to learn to how sharpen leaves properly. Also there is a lot sun and shade, light and dark... Personally, when I look at the bark on the birch tree, the second photo has good detail, compared to the first. Can this be improved upon any? Thanks.
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Old Jun 2, 2010, 9:34 AM   #4
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Well, sharpening essentially does the same as HDR processing by brightening or darkening each pixel based on the ones next to it which increases local contrast so you can see the detail. If you overdo it you can even see small halos. There is software specifically designed to enhance the detail or you could just apply some gentle HDR to the scene which will give you the sharpening but also help recover a bit of the detail that's lost in the blown area on the birch as well as the deeper shadows. I had a go with my program which works but doesn't have a the fine control you might want but you could always merge the result with your original to get something more subtle:

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Old Jun 2, 2010, 10:16 AM   #5
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Martin, which programme do you use? Many kind thanks for your help! Ned
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Old Jun 2, 2010, 10:19 AM   #6
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Hi, Martin. On my screen, the tree trunk just at the left edge of the trail appears to have an artifact on its left side running from the top of the picture down about a quarter of the length of the tree. It was the first thing that caught my eye when I looked at your processing. Does it appear on your screen, too? It may be a Gibbs effect artifact. Other than that structure, the processing is quite pleasing. FWIW.
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Old Jun 2, 2010, 10:46 AM   #7
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@Eetu - it's my own program - free link in my sig or http://www.martinandanna.talktalk.net/autohdr.html if you don't have signatures enabled

@tclune - I think I see what you mean but it's in the original (In Eeetu's first post, not the second - they're slightly different images). I think it's just another tree further back. I'll add the processed version of the second shot in my previous post for comparison.
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Old Jun 2, 2010, 11:14 AM   #8
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Many thanks, indeed, Martin!
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Old Jun 2, 2010, 12:07 PM   #9
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Quote:
Originally Posted by MartinSykes View Post
@tclune - I think I see what you mean but it's in the original (In Eeetu's first post, not the second - they're slightly different images). I think it's just another tree further back. I'll add the processed version of the second shot in my previous post for comparison.
Ah, right you are! My bad. Overall, I like the processed first one better than the processed second one, but that line is a real distraction to me.
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Old Jun 2, 2010, 1:51 PM   #10
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Except for Martin's AutoHDR, nothing comes for free Eetu.
Look here:

http://www.cambridgeincolour.com/tec...sharpening.htm

And here:

http://www.cambridgeincolour.com/tut.../sharpness.htm

And here:

http://www.cambridgeincolour.com/tut...sharp-mask.htm
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