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04/11/2005 12:26:17 PM · #1 |
Thanks for the feed back |
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04/11/2005 12:28:30 PM · #2 |
| No, it has very nice sharpness. Good picture. |
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04/11/2005 12:51:31 PM · #3 |
Looks fine - no visible halos.
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04/11/2005 01:01:19 PM · #4 |
What was your process in getting the image that sharp with USM?
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04/11/2005 02:05:57 PM · #5 |
Photo look crystal clear and very crisp. USM is what I have the most trouble with. Any possibility you could share the original pic, along with your steps to improve and sharpen it? It might help those of us who have problems with USM.
Thanks!
Message edited by author 2005-04-11 14:06:12.
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04/11/2005 02:17:41 PM · #6 |
Might be a hair too sharp; it's a matter of mood & taste. No visible artifacts so no problem there. Post the original before sharpening but after other processing?
Robt.
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04/11/2005 02:19:01 PM · #7 |
Please explain what you guys mean with USM and sharpening?
I always thought USM referred to Ultra-Sonic Motor lenses which focused much faster than standard lenses?
Am I mis-informed about the meaning of USM? |
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04/11/2005 02:20:50 PM · #8 |
UnSharp Mask in photoshop; it's a subtle means of adjusting the sharpness of details in an image. Shares an acronym with the focusing motor.
Robt.
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04/11/2005 02:26:53 PM · #9 |
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04/11/2005 02:58:11 PM · #10 |
| Did you use USM or High Pass filter to sharpen? Looks like the latter to me. |
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04/11/2005 03:28:07 PM · #11 |
well, not always subtle...
Originally posted by bear_music:
UnSharp Mask in photoshop; it's a subtle means of adjusting the sharpness of details in an image. Shares an acronym with the focusing motor.
Robt. |
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04/11/2005 05:47:41 PM · #12 |
USM was 60% Radius 1.0 pixels Threshold 4 levels
Unfortunatly I took this image right from the CF card and only saved the posted image. Because the images were not keepers, I just wanted the practice with PSCS,and the image did look like it was over done to me when I was done playing with it. I wanted some other opinions.
I adjusted the color levels to turn the water blue and adjusted the brightness and contrast to bring out the water drops on the white neck ,resized the image to 640 on one side then applied the USM with the above settings.
Just trying to improve on my PSCS skills.
Thanks for all of the feedback |
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04/11/2005 05:49:15 PM · #13 |
Originally posted by dpdave:
well, not always subtle...
Originally posted by bear_music:
UnSharp Mask in photoshop; it's a subtle means of adjusting the sharpness of details in an image. Shares an acronym with the focusing motor.
Robt. |
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Subtle in that it's a tool capable of subtlety. Easily abused, of course...
Robt.
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04/11/2005 05:57:03 PM · #14 |
I golden tip for sharpening is to convert to Lab colour then do your sharpening on the 'Lightness' channel. This prevents haloing of colours and gives the shot a very clear result.
The Lightness channel holds only detail, not colour information - which is held in channels 'a' and 'b'.
Try it - you won't look back...
Edit: very nice pic of the swan!
Message edited by author 2005-04-11 17:58:55. |
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04/11/2005 06:09:56 PM · #15 |
How do you do the sharpening only on the lightness channel? I was reading another USM thread and it had this technique but I couldn't figure out how to do it.
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04/11/2005 06:16:16 PM · #16 |
Tuckersmom -
> convert image to Lab
> click on Channels tab
> click once on the 'Lightness' channel
> apply chosen sharpen technique then place in oven for 5 mins
... voila! |
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04/11/2005 06:22:26 PM · #17 |
Originally posted by Imagineer:
I golden tip for sharpening is to convert to Lab colour then do your sharpening on the 'Lightness' channel. This prevents haloing of colours and gives the shot a very clear result.
The Lightness channel holds only detail, not colour information - which is held in channels 'a' and 'b'.
Try it - you won't look back...
Edit: very nice pic of the swan! |
Thanks Jon I will give it a try |
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04/11/2005 06:41:17 PM · #18 |
Thanks Jon - it worked great :)
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04/11/2005 09:00:54 PM · #19 |
Dunno what monitors you lot are looking at this on, but i can clearly see a nasty dark halo following the top of its neck, and some nasty jaggies halfway up the neck on the left - aside from that it's not too bad though. I personally prefer to do a one-pass directional sharpen, AFTER i've done my final resize, and if in desperate need follow it up with a 50% adaptive unsharp (dunno what these translate to in photoshop, i use corel photopaint).
However, for this subject i'd forgo the directional sharpen as it's too easy to halo the edge of the neck, and go for a gentler 100% adaptive unsharp to bring out the fine details only.
I thought that since swans are my forte, i'd demonstrate by shamelessly ripping off your swan pic, down to the specie and image dimensions:
(that demonstrates the sharpening i described, with none of the halos - all allowed in basic editing)
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04/11/2005 09:40:57 PM · #20 |
[quote=riot] Dunno what monitors you lot are looking at this on, but i can clearly see a nasty dark halo following the top of its neck, and some nasty jaggies halfway up the neck on the left - aside from that it's not too bad though. I personally prefer to do a one-pass directional sharpen, AFTER i've done my final resize, and if in desperate need follow it up with a 50% adaptive unsharp (dunno what these translate to in photoshop, i use corel photopaint).
However, for this subject i'd forgo the directional sharpen as it's too easy to halo the edge of the neck, and go for a gentler 100% adaptive unsharp to bring out the fine details only.
I thought that since swans are my forte, i'd demonstrate by shamelessly ripping off your swan pic, down to the specie and image dimensions:
(that demonstrates the sharpening i described, with none of the halos - all allowed in basic editing) [/quote
The bright white strip on the swans body is a bit distracting to me. I had the same type thing in my image and cropped it out |
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04/12/2005 05:26:17 AM · #21 |
Originally posted by RANDOD300:
The bright white strip on the swans body is a bit distracting to me. I had the same type thing in my image and cropped it out |
Aye, the photo itself ain't much good, i just picked a similar subject to demonstrate the sharpening technique :)
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04/12/2005 05:44:53 AM · #22 |
I feel that highly sharpened images tend to do well on this website. For the challenges, I have started to over sharpen my images (to my taste) leaving the odd area of jagginess and have received praise for it (and still a couple of comments that it is not quite sharp enough).
Part of the skill is sharpening in such a small image size - 640 pixels isn't a lot. Sharpening is much more subtle on larger image files. There is definitely a separate "USM for DPC" skill that is useful for low res web content.
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04/12/2005 05:49:35 AM · #23 |
Originally posted by Imagineer:
I golden tip for sharpening is to convert to Lab colour then do your sharpening on the 'Lightness' channel. This prevents haloing of colours and gives the shot a very clear result.
The Lightness channel holds only detail, not colour information - which is held in channels 'a' and 'b'.
Try it - you won't look back...
Edit: very nice pic of the swan! |
As another alternative that achieves the same thing: copy your image to a new layer and sharpen the new layer. Then set the layer blending mode to luminosity.
An even better way is to copy your original to a new layer. Then use the high pass filter on the image. This makes you a sharpening layer. Set the blending mode to soft light to apply the sharpening. The benefit of this method is that you can paint away or diminish the sharpening in various parts of the image so that only the regions of the image that need it are sharpened. Paint with 50% grey on the sharpening layer to remove the sharpening effect.
Regarding the swan - nice image but yes it looked over sharpened to my eye. No visible haloing but still too sharp.
John
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04/12/2005 07:08:30 AM · #24 |
Originally posted by floyd:
Paint with 50% grey on the sharpening layer to remove the sharpening effect. |
Another approach - but I'd recommend a layer mask rather than painting grey, as the mask will retain the image data instead of painting over and destroying it. |
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04/13/2005 04:04:03 PM · #25 |
Sorry to resurrect a dead thread but I meant paint 50% grey on the high pass layer (the one you set to soft light blending). This edit is non-destructive to the original image. All you're doing is editing the sharpening layer. The beauty of this approach is that the sharpening is non-destructive and very very tunable.
John
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