| Kapitel 12. Enrich my GIMP | ||
|---|---|---|
|
Teil II. Vom Einsteiger zum GIMP-Profi |  |
| Kapitel 12. Enrich my GIMP | ||
|---|---|---|
|
|
Teil II. Vom Einsteiger zum GIMP-Profi | |
Inhaltsverzeichnis
The preferences dialog can be accessed from the image menu-bar, through → . It lets you customize many aspects of the way GIMP works. The following sections detail the settings that you can customize, and what they affect.
All of the Preferences information is stored in a file called
gimprc in your personal GIMP directory, so
if you are a „power user“ who would rather work with a
text editor than a graphical interface, you can alter preferences by
editing that file. If you do, and you are on a Linux system,
then man gimprc will give you a lot of
technical information about the contents of the file and what
they are used for.
Abbildung 12.2. System Resources
This page lets you customize the amount of system memory allocated for various purposes. It also allows you to disable the confirmation dialogs that appear when you close unsaved images, and to set the size of thumbnail files that GIMP produces.
Resource Consumption
GIMP allows you to undo most actions by maintaining an „Undo History“ for each image, for which a certain amount of memory is allocated. Regardless of memory usage, however, GIMP always permits some minimal number of the most recent actions to be undone: this is the number specified here. See Abschnitt 3, „Rückgängig machen“ for more information about GIMP's Undo mechanism.
This is the amount of undo memory allocated for each image. If the Undo History size exceeds this, the oldest points are deleted, unless this would result in fewer points being present than the minimal number specified above.
This is the amount of system RAM allocated for GIMP image data. If GIMP requires more memory than this, it begins to swap to disk, which may in some circumstances cause a dramatic slowdown. You are given an opportunity to set this number when you install GIMP, but you can alter it here. See How to Set Your Tile Cache for more information.
This is not a hard constraint: if you try to create a new image larger than the specified size, you are asked to confirm that you really want to do it. This is to prevent you from accidentally creating images much larger than you intend, which can either crash GIMP or cause it to respond verrrrrrrry slowwwwwwwwly.
Default is one. Your computer may have more than one processor.
Hardware acceleration
OpenCL is an acronym for Open Computing Language (see Wikipedia). This option, checked by default, improves the management of relations between the CPU and the graphic processing unit (GPU).
Image Thumbnails
This options allows you to set the size of the thumbnails shown in the File Open dialog (and also saved for possible use by other programs). The options are „No thumbnails“, „Normal (128x128)“, and „Large (256x256)“.
If an image file is larger than the specified maximum size, GIMP will not generate a thumbnail for it. This options allows you to prevent thumbnailing of extremely large image files from slowing GIMP to a crawl.
Document History
When checked, files you have opened will be saved in the Document history. You can access the list of files with the Document history dialog from the image menu-bar : → → .
This page lets you customize the GIMP color management.
Some of the options let you choose a color profile from a menu. If the desired profile is not in the menu yet, you can add it by clicking on the item.
![[Tipp]](images/tip.png)
|
Tipp |
|---|---|
|
Files containing color profiles are easily recognizable by their
|
Using this option you can decide how the GIMP color management operates. There are three modes you can choose from:
No color management: choosing this selection shuts down the color management in GIMP completely.
Color managed display: with this selection you can enable the GIMP color management to provide a fully corrected display of the images according to the given color profile for the display.
Soft-proofing: when choosing this option, you enable the GIMP color management not only to apply the profile for the display, but also the selected printer simulation profile. Doing so, you can preview the color results of a print with that printer.
![[Anmerkung]](images/note.png)
|
Anmerkung |
|---|---|
|
Please note, that the GIMP color management is used to enhance the display of images and the embedding of profiles to image files only. Especially are the options you choose in this dialog in no way used for printing from within GIMP. This is because the printing is a special task done by a more specialized printing engine that is no part of GIMP. |
Monitor profile
None : GIMP uses the colorimetric profile of your monitor.
Select color profile from disk : if you have one.
Try to use the system monitor profile : If checked, GIMP will try to use the display color profile of the system windows handler. Else, the configured monitor profile is used.
Rendering intent
This option is about how colors are converted from the color space of your image to your display device. Four modes are available: „Perceptual“, „Relative colorimetric“, „Saturation“ and „ Absolute colorimetric“.
Relative colorimetric is usually the best choice (default). Unless you use a LUT monitor profile (most monitor profile are matrix), choosing perceptual intent actually gives you relative colorimetric.
Use black point compensation
This option is checked by default. Do use black point compensation unless you have a reason not to.
Optimize image display for:
Two options: and . „Speed“ is activated by default. If not, image display might be better at the cost of speed.
Soft-proofing is a mechanism that allows you to see on your screen what printing on paper will look. More generally, it is soft-proofing from the color space of your image to another color color space (printer or other output device).
Soft-proofing profile
is the choice by default. The drop-down list offers the possibility of .
Rendering intent As above, four modes: „Perceptual“, „Relative colorimetric“, „Saturation“ and „ Absolute colorimetric“. Try them all and choose what looks the best.
Use black point compensation
Try with and without black point compensation and choose what looks best.
Optimize soft-proofing for:
Two options: and . „Speed“ is activated by default. If not, soft-proofing might be better at the cost of speed.
Mark out of gamut colors
When this box is checked, the soft-proofing will mark color that can not be represented in the target color space. On the right, a color button, when clicked, opens a color selector to choose the wanted color.
RGB profile
Default is „None“ and the built-in RGB profile is used. You can select another RGB working space color profile from disk: it will be offered next to the built-in profile when a color profile can be chosen.
Grayscale profile
Default is „None“ and the built-in Grayscale profile is used. You can select another Grayscale working space color profile from disk: it will be offered next to the built-in profile when a color profile can be chosen.
CMYK profile
Default is „None“. You can select a CMYK working space color profile from disk to convert RGB to CMYK.
File Open Behavior
Default is „Ask what to do“. You can also select „Keep embedded profile“ or „Convert to preferred RGB color profile“ to indicate how to treat embedded color profiles when opening an image file.
|
|
Anmerkung |
|---|---|
|
For more explanations:
Many profiles to load from the web:
|
