Episode 106: Colours and Values

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The image in monochrome, toned in three ways and sharpened - but where is what? ;-)  It’s toning time again. Toning is done do black and white images to increase their “volume”, the perceived contrast range. We only have 256 values on the screen, so a bit of colour can be good.

In #39 I had shown how to make a Duotone or Tritone out of a monochrome image. And then Paul Wellner Bou showed in his Blog an easier way to do this.

It’s working, but why? To answer that, I look into the HSV colour model and try to explain the effects of the different layer modes.

A little bit about sharpening in an extra layer with “value” as the mode and a pointer to faking analog camera frames in digital images with a script and an original Hasselblad frame made by Marcus Ranum are at the end of the episode.

The TOC

01:00 Toning images
02:00 Toning enhances the visual volume
03:50 The recipe for a duotone
04:30 Adding a layer in colour mode and adding a layer mask from an image copy
07:00 Doing the same for the second tone
08:00 Inverting the mask
09:20 Switching layers on and off
10:30 Sharpening in Value mode
12:20 Unsharp mask
15:10 Explanation of Colour and Value mode
17:10 HSV colour model
20:00 A fake view camera frame
22:20 Multiply mode
23:40 A real Hasselblad frame

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Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under a Creative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 016: And the Winner is…. / Frames and Tryptichs in a new Way

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In this show John Arnold from Photowalkthrough draws the winner of the triptych contest. Before that we talk about why you should also listen to his podcast and about a really nice workshop. I have to work at that time (May 5th to 7th), but otherwise I would have shelled out the money and gone there.

Then I’ll show you a new way to make a frame around an image or to do a triptych. It works with layer masks. The tip to do it that way was sent by Jason from New York.

Finally you’ll see all the triptychs made by you in a slideshow to the full lenth “Surreal in Vienna” by _Ghost – the music I use in the intro. More from _Ghost at ccmixter.

The TOC

00:23 Welcome
00:34 Gimp 2.4
01:30 Meet The Gimp web site
03:28 Interview with John Arnold from Photowalkthrough
11:07 Alternative triptych method
13:00 – create a canvas
13:44 – add the images as layers
15:20 – scale the layers
19:50 – add a layer mask
20:40 – make the edges ragged
24:20 (Tip for guides)
25:05 – Change the composition by moving a layer
28:27 Triptych contest entries
33:12 The End
TOC made by paynekj

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Creative Commons Attribution-Share Alike 2.0 Germany License.

Episode 013: A Triptych and a Challenge for You!

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Triptychs – and nearly one hour of them. In this episode I’ll show you how to combine three images to one good looking set and get some frames and borders around them. Again a layer mask is used to partially edit a picture with the curves tool.

tryptich-mtg.jpg

The idea to this show came from this thread at the Tips from the Top Floor forum.

More about triptychs can be found at the Wikipedia here and here. More triptychs can be found here at google.

And I have a challenge for you. Make a triptych and put it online at the photogroup “meetthegimp.org” at 23. (23 is a friendly danish image hoster. I am their customer since flickr.com decided to censor my access to images because I am living in Germany.) I’ll show all the images in show 16 – so you have time up to October 16 or so to upload your stuff. I have asked a potential sponsor 23 to donate a bit – so it is possible that I have something as a price for you. (No, it’s not a license for the full version of the Gimp….. 😉 )and they have given me some codes for getting a year of full service at 23. I’ll choose the winner (if there is a price…) by random – so equal chances for all.

The TOC

00:24 Welcome to triptychs
04:44 The source images
07:46 Resizing the images
09:25 Make the background
12:40 Placing the images on separate layers
16:36 Set the background colour
17:10 Frame each image using layers
20:45 Frame the triptych by stroking selection
24:50 Fine-tune the images
25:00 Use curves to get part of the image right
28:38 Use layer-mask to isolate other part of image
36:52 Add a caption using the text tool
40:00 Save the file
40:40 Resize for the web
41:05 Sharpen the individual images
43:00 Re-do the caption
44:16 Re-save as JPEG
44:53 23hq.com
46:15 – mtg-triptych tag
47:55 – Add image to Meet The Gimp group
51:42 The End
TOC made by paynekj

Get the files used!

The files from this episode.

Contact me!

You can leave your comments on this blog or write me a mail.

Creative Commons License This work is licensed under a
Creative Commons Attribution-Share Alike 2.0 Germany License.

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