| Author | Thread |
|
|
08/14/2002 03:27:09 PM · #1 |
|
|
|
09/13/2002 03:08:16 PM · #2 |
| For editors that support it (like Photoshop), you might want to add that it's generally better to do sharpening in the lightness channel only in lab mode (Image -> Mode -> Lab Color); don't forget to switch back to RGB when you're done. Sharpening in RGB mode tends to affect your colours, whereas using the lightness channel will avoid this; a comparison of results might be a useful addition to the tutorial. |
|
|
|
01/18/2003 06:35:11 PM · #3 |
I've also read (and experienced) that a radius underneath 1 can be usefull for gettign sharpening of fine details without having the wide tell-talle white border of a sharpen. i often use 0.4-0.6 radius in my images.
|
|
|
|
01/18/2003 06:43:09 PM · #4 |
Originally posted by Refracted:
I've also read (and experienced) that a radius underneath 1 can be usefull for gettign sharpening of fine details without having the wide tell-talle white border of a sharpen. i often use 0.4-0.6 radius in my images. |
Me2. 0.3-05 50-200% 1 treshold
|
|
|
|
01/18/2003 08:35:39 PM · #5 |
Originally posted by dwoolridge:
For editors that support it (like Photoshop), you might want to add that it's generally better to do sharpening in the lightness channel only in lab mode (Image -> Mode -> Lab Color); don't forget to switch back to RGB when you're done. Sharpening in RGB mode tends to affect your colours, whereas using the lightness channel will avoid this; a comparison of results might be a useful addition to the tutorial. |
You might want to also explain what the lightness channel in LAB mode is. I understand about changing to LAB mode but what do you mean about sharpening the lightness channel?
T
|
|
|
|
01/18/2003 08:38:07 PM · #6 |
Oh, there it is, in the Channels menu, of all places :- )
T
|
|
|
|
01/19/2003 11:57:53 PM · #7 |
I have been playing around with the unsharp mask for the first time and found it quite hard to get the results I wanted, I read the tutorial and found it helpful, but it would be great if anyone could post some more examples of sharpening at different levels. Thanks in advance!
|
|
|
|
03/06/2004 03:28:45 AM · #8 |
| I came across this interesting page that includes some info on blurring and sharpening. |
|
|
|
03/06/2004 03:41:44 AM · #9 |
Originally posted by dwoolridge:
For editors that support it (like Photoshop), you might want to add that it's generally better to do sharpening in the lightness channel only in lab mode (Image -> Mode -> Lab Color); don't forget to switch back to RGB when you're done. Sharpening in RGB mode tends to affect your colours, whereas using the lightness channel will avoid this; a comparison of results might be a useful addition to the tutorial. |
Another way to achieve this without needing to change modes is to apply a standard unsharp mask, then immediately fade to luminosity (Edit -> Fade Unsharp Mask).
:)atwl
|
|
|
|
03/06/2004 06:00:41 AM · #10 |
Originally posted by Adrian Tung:
Another way to achieve this without needing to change modes is to apply a standard unsharp mask, then immediately fade to luminosity (Edit -> Fade Unsharp Mask). |
Indeed! In fact, your suggestion is better since you avoid Lab conversion degradation (and having to remember image vs. working color space differences). |
|
|
|
07/27/2004 12:22:55 PM · #11 |
A nicely written tutorial but it's almost impossible to compare each version with the original (or with whichever one is being referred to) by scrolling up and down.
I'd suggest displaying the original next to each variation (with careful labelling) and likewise, if you try two different thresholds, sit them side by side etc.
|
|
|
|
07/27/2004 12:26:03 PM · #12 |
Originally posted by Natasha:
I have been playing around with the unsharp mask for the first time and found it quite hard to get the results I wanted, I read the tutorial and found it helpful, but it would be great if anyone could post some more examples of sharpening at different levels. Thanks in advance! |
Some old examples at pBase. |
|
|
|
07/27/2004 12:28:10 PM · #13 |
Originally posted by GeneralE:
Originally posted by Natasha:
I have been playing around with the unsharp mask for the first time and found it quite hard to get the results I wanted, I read the tutorial and found it helpful, but it would be great if anyone could post some more examples of sharpening at different levels. Thanks in advance! |
Some old examples at pBase. |
Quite a late reply, hehe :) Only 19 months after she asked :P
|
|
|
|
07/27/2004 12:33:28 PM · #14 |
Originally posted by Konador:
Originally posted by GeneralE:
Originally posted by Natasha:
I have been playing around with the unsharp mask for the first time and found it quite hard to get the results I wanted, I read the tutorial and found it helpful, but it would be great if anyone could post some more examples of sharpening at different levels. Thanks in advance! |
Some old examples at pBase. |
Quite a late reply, hehe :) Only 19 months after she asked :P |
I am the king of procrastination ... besides I posted that gallery when I first created it in response to a previous request a long time ago -- if she'd have searched the forums she would have found it herself.
I'm trying to figure out why I didn't ever seem to see this thread ... :( |
|
|
|
07/27/2004 12:38:19 PM · #15 |
The forum search wasn't existant in them olden days :)
|
|
|
|
07/27/2004 12:51:02 PM · #16 |
that is very helpful. thanks.
drake |
|
|
|
04/24/2005 10:49:43 PM · #17 |
is color space conversion 'legal' in Basic editing
I.E. rgb -> Lab -> curves -> rgb |
|
|
|
04/24/2005 10:53:29 PM · #18 |
Originally posted by ralphnev:
is color space conversion 'legal' in Basic editing
I.E. rgb -> Lab -> curves -> rgb |
Should be OK to do that : ) |
|
|
|
04/24/2005 10:55:45 PM · #19 |
|
|
|
04/24/2005 10:58:22 PM · #20 |
Originally posted by ralphnev:
is color space conversion 'legal' in Basic editing
I.E. rgb -> Lab -> curves -> rgb |
Yes, color space conversion is legal.
|
|
|
|
04/24/2005 11:07:26 PM · #21 |
Image sharpening can be achieved through a huge number of wild and wonderful ways. It is almost an artform.
Image sharpening is a basic editing concept. It would be nice if someone created a tutorial to expand on the possibilities.
|
|
|
|
04/25/2005 12:02:02 AM · #22 |
Originally posted by stdavidson:
Image sharpening can be achieved through a huge number of wild and wonderful ways. It is almost an artform.
Image sharpening is a basic editing concept. It would be nice if someone created a tutorial to expand on the possibilities. |
Are you volunteering? |
|
|
|
04/25/2005 08:11:21 AM · #23 |
This is so true! I've used the crosshatch filter to sharpen, and watercolor filter, high pass, and many other tools to sharpen some of my photos.
Originally posted by stdavidson:
Image sharpening can be achieved through a huge number of wild and wonderful ways. It is almost an artform.
Image sharpening is a basic editing concept. It would be nice if someone created a tutorial to expand on the possibilities. |
|
|
