Meet the GIMP #58: White is Grey - and Black too!

Posted in Development, Graphics on April 25, 2009

Meet the GIMP #58: White is Grey - and Black too!

Finally the “Zone Adjustment Plugin” - formerly known as “Meaningful Black Script” is shown in its full glory. You find it here and in the companion file.

EDIT: This plugin has evolved tremendously. Go to the Forum entry and search from the last postings backwards for it’s latest incarnation!

And I present a plugin for displaying EXIF information in an image, a split toning plugin and a plugin for applying the “Lazlo Dragan effect”. (Download should now be possible without need to register - sorry, made a mistake in the configuration.) All were published in the Forum of Meet the GIMP.

You can find information about the installation of these plugins there too. Basically you just copy them into your plugin directory (not the scripts directory) and make them executable. The last step is not necessary under Windows.

The show starts with a short introduction into the Zone System of Ansel Adams. Before we go deeper into this, we have to calibrate our cameras. Set your camera to manual mode, set the metering to spot or center based and shot a well exposed image of something middle grey or whitish with a bit of structure in it. I took a white door, but raw concrete is fine too. Then shoot two series of images, the first one closing down one stop in each image, the other in opening up one stop for each step. We’ll look at my images next week.

The TOC:

Ansel Adams and the Zone System 0:27
Calibrating your camera for the Zone System 7:00
Plugins in the Forum 9:36
Working with the “Zone Adjustment Plugin”, formerly know as “meaningful Black” 11:25
Detaching menues in GIMP 12:23
Sample Points 12:50
Finding the Dark and Bright point 15:25
Using the plugint 19:40
The proof: white is grey - and black too! 25:25

The image used in this podcast was made during a performance of Pascale Loiseau from the Belgian  WAZOVOL artists group. I found a video of her performance.

Edit: I changed “script” to plugin - there is a bit of confusion….

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Tags: Python, Design, GIMP, Meet the GIMP, Broadcasting, Screencasts, Development, Zone System, sample points, Script#