Episode 084: The 3 Letter Acronym Show (RePost)

This is a repost of Episode 84 – there seem to be some feed problems. there is no need for download if you have seen 84 already.

84This week I start with a short introduction into autostereoscopic images, see two posts below. Then I cover the GEGL operation “c2g”, which converts acouloured image into a monochrome image with a lot of noise or other other effects. It’s a “try out” thing – up to now I have not found documentation. Perhaps one has to look into the source. Be warned – some parameters can kill the program.

Then Joseph tells us. how easy it is to make “HDR” images with QTPFSGUI. It’s not as complicated as I feared. I’ll try it soon myself. The website Joseph pointed me to is here.

The TOC

00:28 Autostereoscopic images

02:10 Petersons image with GEGL c2g

03:30 c2g is used

06:30 Introducing Joseph

07:00 Introduction into HDR photography

09:00 QTPFSGui

10:00 Aligning the images

10:30 waiting….

11:20 Editing tools

12:10 Set the parameters

12:50 Save the image

13:00 Change the EV values

14:30 Tone mapping

15:40 saving in an LDR format (JPEG)

16:20 different effects

18:10 Web site with more info

Creative Commons License This work is licensed under a

Creative Commons Attribution-Share Alike 2.0 Germany License.

Episode 084: The 3 Letter Acronym Show

Download the Video!
Download the companion file! (…if there is one…. 😉 )

84This week I start with a short introduction into autostereoscopic images, see two posts below. Then I  cover the GEGL operation “c2g”, which converts acouloured image into a monochrome image with a lot of noise or other other effects. It’s a “try out” thing – up to now I have not found documentation. Perhaps one has to look into the source. Be warned – some parameters can kill the program.

Then Joseph tells us. how easy it is to make “HDR” images. It’s not as complicated as I feared. I’ll try it soon myself. The website Joseph pointed me to is here.

The TOC

00:28 Autostereoscopic images
02:10 Petersons image with GEGL c2g
03:30 c2g is used
06:30 Introducing Joseph
07:00 Introduction into HDR photography
09:00 QTPFSGui
10:00 Aligning the images
10:30 waiting….
11:20 Editing tools
12:10 Set the parameters
12:50 Save the image
13:00 Change the EV values
14:30 Tone mapping
15:40 saving in an LDR format (JPEG)
16:20 different effects
18:10 Web site with more info

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

Episode 015: RAW to the rescue! Mini-HDR ;-)

Download the Video!
Download the companion file! (…if there is one…. 😉 )

I shot some autumn scenes with a Lensbaby in a very mixed light condition. And I haven’t checked the histogram after this shot. It is the only one with the focus right on spot and a dreamy flair. The leaf in the center was overexposed in the JPG image – blown out highlights ruined the image.

This is the final image – not the one with the blown out highlights….

But I had shot in JPG and NEF (Nikon’s RAW) – so I used UFRaw to produce a TIFF file with the right exposure of the leaf and blended it into the image with a layer mask. This is basically the way (pseudo-) HDR works. Take different parts of the image from differntly exposed photographs.

A slight correction with the hue/saturation tool was necessary to adjust the colours. Cropping was done twice – a mistake made a correction necessary. So I covered some advanced options in cropping.

I promised some links:

Don’t forget to make a triptych and post it in the photogroup. I’ll draw a winner for the one year 23Plus membership sponsored by 23 in show 16. So you have still time to Oct. 18 to submit an entry. The pictures there are already worth to be looked at.

Get the files used!

The files from this episode.

The TOC

00:23 Welcome
00:34 Triptych challenge
02:55 More on liquid rescale
05:36 Red Hat Magazine
07:04 The Lensbaby source image
09:47 Raw conversion using UFRaw
14:30 Open in Gimp
15:00 Add TIFF as a new layer
16:00 Aligning the layers
18:18 Add a layer mask
21:45 Adjust the hue-saturation
25:46 Crop the image
28:40 Reduce the file size by cropping the top layer
30:00 Remove a distraction using the clone tool
34:48 Resize for web
37:40 Sharpening
42:23 the End
TOC made by paynekj

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