Photoshop plugin: USM2
"Unsharp Mask 2" Gimp plugin ported to PS:

Plugin, source

First off: be very careful with sharpening filters! They can be useful, but they can also do subtle but serious damage to an image if you don't know what you're doing. If you don't know what halo effects are, find out before touching this or any other USM filter. This filter has a couple tunables to help reduce haloing, which is the major artifact of USM.

This filter will appear as Filters -> Sharpen -> Unsharp Mask 2. 16-bit images and Photoshop actions are supported. I've only tested and built it for 32-bit PS.

Gamma applies a gamma curve during the filter, to give the filter a linear colorspace. The default of 1.8 is probably OK. A value of 1 means no adjustment.

"Amount +" adjusts how much sharpening will be done by brightening the image. Reducing this to 0 means the image will never be brightened.

"Amount -" adusts how much sharpening will be done by darkening the image. 0 is the default, which means the image will never be darkened.

The "Highlight", etc. settings reduce the amount of sharpening within a particular luminescence range. 1 means no change.

I've optimized the filter; it's 2-3x as fast as the GIMP version. The source is there if any GIMP people want to port it back.
Great! I'd better start learning how to use this...
thanks for the plugin.
i was waiting for this ages =D
thanks, i'll write a example after i get home (now commenting by my cell phone)
radius 1.5~2.0
amount+ 0.5
amount- 0
threshold 0.01~0.02
shadows 0.5
might be same to my setting using on gimp, but...

bad allocation for 5000px ;_;
Updated: lower memory usage, some UI tweaks and cleanups...

The output should be identical to GIMP, but I havn't compared (I don't have it installed). If it's different, let me know.
o_0 it becomes work on huge size and 3 times faster than Gimp =D

the difference is about amount+ & amount-
in Gimp, amount+- takes 0~5 ranges, and amount- 0 means no effect. amount- 1 is as same as normal USM amount 1 darken only.
See if it looks correct now.
http://img9.imageshack.us/img9/6637/clipboard1q.png

I never use 'preserve', so looks perfect :)

change the example; amount+ 0.5 amount- 1.0
"Preserve" didn't do anything unless Amount+ and Amount- were both 0, which makes it a blur, not a sharpen, so I took it out.

By the way, like Greyc, you can use the mousewheel to adjust, and shift-mousewheel to adjust more (which is why there are no sliders).
petopeto said:
"Preserve" didn't do anything unless Amount+ and Amount- were both 0, which makes it a blur, not a sharpen, so I took it out.

By the way, like Greyc, you can use the mousewheel to adjust, and shift-mousewheel to adjust more (which is why there are no sliders).
Oh thanks for the tips.
http://img5.imageshack.us/img5/3105/clipboard1h.png

I got the one action can make whole filtering process now. it saves my editing time a lot =D

(I'm still using Gimp to rotate & merge spread pages because PS's rotation tool is abysmal shit. someone needs to poke adobe :/)
What about Tiffen DFX ?
I'd suppose DFX maybe the most powerful 2D Light&Shadow PS Plugin?
If you love halo effects, try it.
This one:
http://moe.imouto.org/post/show/97128/kanekiyo_miwa-naked-natsu_no_ame-nipples-photoshop

is processed with DFX from this one:
http://moe.imouto.org/post/show/97129/kanekiyo_miwa-naked-natsu_no_ame-nipples-shinooka_

I used Halo,Silver Reflector and Day-For-Night effects from DFX in this image...
The problem with USM filters is that they cause halos, and the whole point of this plugin is to help reduce halos.
bad allocation for 6000px hime posters when the plugin comes to the next of Greycstration in action ;_;
I've updated with some memory handling changes. See if it works better now. Once this is tested better I'll probably port this to the Greyc plugin.

It also allows scrolling off the edge of the image now.
updated 1st post to new file + fixes