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10 band Light Equalizer for PhotoShop

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  #1  
Old 11-30-2009, 02:26 PM
manta1900 manta1900 is offline
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10 band Light Equalizer for PhotoShop

Dear RetouchPRO fans,

I have developed a Light Equalizer for PhotoShop (Equalize Light). I give it free to you to tell me your opinion.

To install it you just copy it into filters subdirectory (e.g. c:\program files\adobe\photoshop cs2\plug-ins\filters\) and you restart PhotoShop. You will find the filter in the menu (Filter->AphtoPhoto).

I'm waiting your opinions
John
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  #2  
Old 11-30-2009, 02:31 PM
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skydog skydog is offline
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Re: 10 band Light Equalizer for PhotoShop

would you post a before and after example thanks
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  #3  
Old 11-30-2009, 04:16 PM
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TommyO TommyO is offline
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Re: 10 band Light Equalizer for PhotoShop

Manta,
Interesting...

- good interface.
- easy to use.

- not so easy to understand what it is doing.
- results in a very extensive loss of texture with very small adjustments to one band.
- not sure of its advantage over levels or curves, if any.

Do you care to share your intended use, functionality, etc. This may be more useful to you so we can share ideas, versus just feedback on the plugin.
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  #4  
Old 11-30-2009, 07:44 PM
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andyong andyong is offline
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Re: 10 band Light Equalizer for PhotoShop

zone system?
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  #5  
Old 11-30-2009, 11:16 PM
Quantum3 Quantum3 is offline
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Re: 10 band Light Equalizer for PhotoShop

Very interesting. I always wondered how to develope a plugin for PS. Could you enlight me?
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  #6  
Old 12-01-2009, 07:45 AM
manta1900 manta1900 is offline
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Re: 10 band Light Equalizer for PhotoShop

Quote:
Originally Posted by TommyO View Post
Manta,
Interesting...

- good interface.
- easy to use.

- not so easy to understand what it is doing.
It divides the image in 10 different light zones (0-Darkest, 10-Lightest) and it allows you to change the light level of each zone.

Quote:
Originally Posted by TommyO View Post
- results in a very extensive loss of texture with very small adjustments to one band.
The filter allows you even extreme changes to the lighting of a photo. To have lifelike changes you will have to follow the following rules:

1) Each channel (zone) has to have less value than any next
2) Each channel (zone) has to have greater value than any previous
3) Channels (zones) should have the maximum possible spacing between them (cause it becomes grayish).
4) Even the smallest changes have effect on picture's lighting
5) Do not change channels 0 and 10


Quote:
Originally Posted by TommyO View Post

- not sure of its advantage over levels or curves, if any.
You are partly right. It does more or less what curves and levels (both) do. The advantages are the following:

1) You can change brightness in 10 different zones (even extreme changes)
2) You can make shadows lighter and lighting less harse (selecting zones to change)
3) It preserves as much as possible the whole information of the image (no overflowing information <0 or >255 keeping the original color.
4) if extreme changes are made (stretched zone with little information) it generates noise to emulate high iso and avoid artifacts.
5) It preserves full levels (no gaps or in any way data loss as most filters do)
6) Do what fake HDR filters do (but with full control)
7) You can use it to generate alien effects going extreme (even inverse the light preserving the color)
8) You can change the contrast of an image
9) It preserves the saturation (desaturates only under extreme conditions to lose no information and preserve the original color proportions).
10) It does what many other filters do (and much better since it keeps rules for minimum data loss) from a simple (and single) interface.

Quote:
Originally Posted by TommyO View Post
Do you care to share your intended use, functionality, etc. This may be more useful to you so we can share ideas, versus just feedback on the plugin.
I hope that the 10 features-intended uses I wrote will give food for thought and give me some more ideas or give you a reason to give it time to show it's true abilities.


Thanks in advance for your time
John
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  #7  
Old 12-01-2009, 11:47 AM
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pavel123 pavel123 is offline
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Re: 10 band Light Equalizer for PhotoShop

My feeling is that curves adj layer is more convenient to use, as almost all channels are to be changed to make a reasonably looking adjustment. One possible application I can think of would be special effects, e.g. posterization based on lightnes
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  #8  
Old 12-01-2009, 12:25 PM
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seattle-light seattle-light is offline
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Re: 10 band Light Equalizer for PhotoShop

Dear Manta...

I applaud your putting together a plug-in for Photoshop. Seems like it's something we should all be learning to create. And I echo Quantum3's interest in how that's done.

A 10-band equalizer seems like an interesting way to adjust and affect an image, but it doesn't seem like it would give you any better control than you have in curves (where you can effect changes from anywhere on the continuum from 0 to 255 in each channel). Maybe I am missing something here. Can it work as an adjustment layer or is the adjustment just directly applied to the image?

If it can be used as an adjustment layer, that would be more useful as it could be adjusted interactively over time. That might actually be quite useful in identifying isolating problem areas in images, especially if it can be used on individual channels.

Just a few thoughts based on what I've read. I haven't loaded it into my system. Hate to add things that don't have a clear purpose in my workflow.

Hope you are doing well. Take care. Alan.
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  #9  
Old 12-01-2009, 02:23 PM
manta1900 manta1900 is offline
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Re: 10 band Light Equalizer for PhotoShop

Quantum3 and seattle-light,


A very good start into PhotoShop filter creation is Adobe's Filter Factory.
It will build the basic skills to continue with a real filter creation application.

http://www.cc.uom.gr/pub/FREEWARE/AD...y/Ffactory.8bf

I advise to read first the documentation

http://www.cc.uom.gr/pub/FREEWARE/AD...er_Factory.pdf

It is as easy as it gets to get you started.
It has tons of examples in the internet and it can show you the source code of any filter created with filter factory.


....if you become familiar with that and it seems too limited you can use the real stuff (I use FilterMeister).
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  #10  
Old 12-01-2009, 02:49 PM
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seattle-light seattle-light is offline
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Re: 10 band Light Equalizer for PhotoShop

Hey Manta1900...

Really appreciate the heads up on the filter creation application info. I hadn't even thought of creating my own filters or plug-ins until I read your post.

I'm not a programmer, but I'm definitely eager to look under the hood as to how these things are made. That's my inspiration for the day.

Hope you are doing well. Take care. Alan.
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