What are Photoshop Plugins?

By Eric Byrne


Photoshop plugins are small modules that Photoshop loads into the Filter menu. Most plugins focus on effects that are hard to duplicate in Photoshop.. Recently a number of plugins have been produced, that do sophisticated image retouching that would otherwise be impossible or very 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.

It is easy to install plugins into Photoshop. Adobe Photoshop installs with a folder called Plug-Ins inside the Photoshop folder. Place the plugins inside the Plug-Ins folder, and you are done. Next time you launch Photoshop, the menu Filters will have your new plugins as an entry. The new plugins will show up the next time you launch Photoshop. So if it was running when you installed the plugins, you will have to quit and relaunch Photoshop. Actually you don't have to install the plugin into Photoshop's Plug-Ins folder. Follow these guidelines to install plugins in any folder you like:

1. First make sure you havbe an alternative plugins folder. Creatge it where ever you like and call it what you will.. 2. Start Photoshop. 3. Go to the menu Edit and open it. Go to the bottom of the Edit menu to Preferences. Open Preferences. 4. Go to the Plug-Ins Preferences. It may be called Plug-Ins and Scratch Disk, depending on your Photoshop version. 5. Activate Additional Plug-Ins Folder by checking it. 6. Use the Choose button to browse to your alternative plugins folder.

As simple as that! You now have an alternative plugins folder where you can store all your personal plugins. Close the Preferences and quit Photoshop. The plugins in your alternative location will be listed at the bottom of the Filter menu next time you run Photoshop.

There are generally two types of plugins: 1. Plugins for photo retouching. 2. Plugins that add effects. Retouching plugins don't add anything new to the photo, but rather manipulate what is already there. Effects plugins on the other hand add, well, effects to the photo. Examples of retouching could be sharpening, exposure or saturation. Examples of effects plugins could be lens flare, bokeh or raster. The distinction is not always so easy. What about lens correction? Is that a retouch or an effect? It is a retouch if you correct barreling or pincushion, but if you make a regular image look like a fish eye picture, it is an effect.

Third party plugin were made possible in 1991 when Photoshop introduced the possibility in Photohop 2. Three years later 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 todays plugins are written in Filter Meister. Ten years after Filter Meister was released, a novel approach to filter development was released as Filter Forge. Filter Forge plugins require Filter Forge to run and they are not stand alone.




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