Episode 089: Transparency

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

Today I talk about the Eraser Tool, Alpha Channels and Layer Masks – in short: about transparency. Jim got me onto this topic with an email. Jim, consider this the answer. 😉

Norman sent me another mail about F-Spot and using RAW and  XCF files. Up to the inclusion of XCF files in the database and an option to get images out of UFRaw in XCF or TIFF, just copy the path of the JPEG with a right click. Store your XCF in the same directory as the F-Spot images and add the tag “HasXCF” So you know that there is a XCF and can search for it.

Show 100 is coming up. What shall be in it? I know about the intro, but nothing more. Discuss it in the forum or in the comments.


00:18 Welcome
00:22 Ideas for episode 100 requested
01:10 The erase tool
02:57 The erasing with an alpha channel
04:05 The channels
06:40 Effect on the alpha channel when erasing
08:45 Un-erasing
10:30 Comparing with layer-masks
14:00 Historic and current images combined
15:20 Transparency menu
15:45 Colour to Alpha
17:00 Threshold Alpha
18:00 Alpha to selection
18:30 Summary
20:45 F-Spot and .xcf files
28:28 The End