6/08/2013

Introducing Photoshop Plugins

By Simon Schurr


Photoshop plugins, or Photoshop filters as they are also called, add extra functions to Photoshop. They are automatically loaded into Photoshop's Filter menu at start-up. Most plugins focus on effects that are hard to duplicate in Photoshop. Today, however, we find on the market a number of plugins that do very sophisticated image retouching that would otherwise have been difficult or time consuming in Photoshop. Photoshop has since begun to offer functions similar to some of the old plugins, like lens correction and proper black-white conversion.

But how does one install plugins into Photoshop, you may ask? Adobe Photoshop installs with a folder called Plug-Ins inside the Photoshop folder. All you have to do is place the plugins inside the Plug-Ins folder. Next time you launch Photoshop, the menu Filters will have your new plugins as an entry. If you had Photoshop running, when you installed the new plugins, you will have to shut and relaunch Photoshop to see the new plugins. The plugins can in fact be installed in any folder you want, not just Photoshop's Plug-Ins folder. Follow these guidelines to install plugins in any folder you like:

1. First make sure your alternative plugins folder exists, otherwise create it where ever you like. 2. Launch Photoshop. 3. Open the menu Edit. Go to the bottom of the Edit menu to Preferences. This will load the Preferences sub menu. 4. Plug-Ins might be called "Plug-Ins and Scratch Disk" depending on your Photoshop version. Go there. 5. Activate Additional Plug-Ins Folder by checking it. 6. Use the Choose button to browse to your alternative plugins folder.

That's it! You can now store all your plugins in this alternative plugins folder. Exit the preferences and relaunch Photoshop. When you relaunch Photoshop, the menu Filters will have the plugins in your alternative plugins folder listed at the bottom of the menu.

Plugins generally fall into two categories: 1. Plugins for photo retouching. 2. Effects plugins. Retouching plugins don't add anything new to the photograph, but rather manipulate what is already there. On the other hand, effects plugins add, well, effects to the picture. Sharpening, exposure or saturation would be examples of retouching. Lens flare, bokeh or raster would be examples of effects. Of course there are cross overs. What about lens correction? Is that a retouch or an effect? If you correct barreling or pincushion, it is a retouch, but if you use it to create the look of a fish eye lens, it is an effect.

Third party plugin were made possible in 1991 when Photoshop introduced the possibility in Photoshop 2. In 1994 Joe Ternasky released Filter Factory for writing third party plugins. Three years after Filter Factory appeared, Alex Hunter released Filter Meister as an improvement over Filter Factory. Many of today's plugins are written in Filter Meister. In 2007 a novel approach to plugin development was released as Filter Forge. Filter Forge plugins require Filter Forge to run and they are not stand alone. Currently Filter Meister plugins only support 32bit Photoshop. But Alex Hunter says 64 bit support will come some time in 2013. Filter Meister is only available for the Windows platform.




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