Comments on: Episode 028: Are 8 Bit enough? http://meetthegimp.org/episode-028-are-8-bit-enough/ A videopodcast about the free graphics program Gimp Thu, 28 Aug 2008 07:35:08 +0000 http://wordpress.org/?v= By: jaims http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-2828 jaims Thu, 21 Feb 2008 15:44:07 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-2828 I've found a nice thread on the subject of color depth, gimp, photoshop, ufraw... Worh a look I think! http://www.flickr.com/groups/83823859@N00/discuss/72157601779400808/ I’ve found a nice thread on the subject of color depth, gimp, photoshop, ufraw…

Worh a look I think!

http://www.flickr.com/groups/83823859@N00/discuss/72157601779400808/

]]> By: jaims http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-2686 jaims Sat, 16 Feb 2008 10:19:18 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-2686 If I start my ubuntu instead of winxp, do not need to compile a thing, just to apt-get the .deb. I don't get the last version of the thing, but it works fine. I've seen that the 'add layers' and 'add mask layers' tools don't work like in the Gimp; has anyone found good tutorials or resources for cinepaint? Not that I'm gonna to switch to cinepaint from Gimp, but learning a bit can't be harmful :-) Jaims If I start my ubuntu instead of winxp, do not need to compile a thing, just to apt-get the .deb. I don’t get the last version of the thing, but it works fine.

I’ve seen that the ‘add layers’ and ‘add mask layers’ tools don’t work like in the Gimp; has anyone found good tutorials or resources for cinepaint?

Not that I’m gonna to switch to cinepaint from Gimp, but learning a bit can’t be harmful :-)

Jaims

]]> By: jaims http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-2671 jaims Fri, 15 Feb 2008 22:50:53 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-2671 Hi there, great episode, I have truly enjoyed the last episodes I have seen (I started a couple of weeks ago with episode 002, and gonna get soon up to date). Great explanations Joel. Great episode -again- Rolf I've just downloaded cinepaint, I'll compile it and give it a try, all the same I'll be waiting for the Gimp to be 16 bit (I love it!) In the meanwhile, the point of Rolf seems good enough tho me; shooting RAW pics and working on RAW, using the Gimp for the fine details... Saludos, Jaims Hi there, great episode, I have truly enjoyed the last episodes I have seen (I started a couple of weeks ago with episode 002, and gonna get soon up to date). Great explanations Joel. Great episode -again- Rolf

I’ve just downloaded cinepaint, I’ll compile it and give it a try, all the same I’ll be waiting for the Gimp to be 16 bit (I love it!)

In the meanwhile, the point of Rolf seems good enough tho me; shooting RAW pics and working on RAW, using the Gimp for the fine details…

Saludos,

Jaims

]]> By: Meet the GIMP « Ang Pilipino GIMP http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-2246 Meet the GIMP « Ang Pilipino GIMP Thu, 31 Jan 2008 19:18:59 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-2246 [...] Episode 028: Are 8 Bit enough? [...] [...] Episode 028: Are 8 Bit enough? [...]

]]> By: Rolf http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1957 Rolf Thu, 17 Jan 2008 17:51:48 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1957 Well, I don't NEED 16 bit (it worked up to today with 8), but I WANT 16 bit to have the leeway. But I'll don't switch programs - I'll wait for GIMP to catch up. Well, I don’t NEED 16 bit (it worked up to today with 8), but I WANT 16 bit to have the leeway. But I’ll don’t switch programs - I’ll wait for GIMP to catch up.

]]> By: Stuart http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1944 Stuart Wed, 16 Jan 2008 19:37:19 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1944 Thanks for the interesting interview. Even though I doubt I'll ever really need the 16-bit, I'm keeping an eye on Krita and PAINT.NET, both of which are 16-bit app.s, if I understand correctly. Thanks for the interesting interview. Even though I doubt I’ll ever really need the 16-bit, I’m keeping an eye on Krita and PAINT.NET, both of which are 16-bit app.s, if I understand correctly.

]]> By: jcornuz http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1941 jcornuz Wed, 16 Jan 2008 13:27:00 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1941 Hi there, I think Rolf did a good job a interviewing and editing. I was less than average at explaining :) @Norman: this is all part of your workflow: if you start with a RAW file and edit / print in 16 bits, you will see a difference from a JPEG from camera edited in 8 bits. Now HOW MUCH of a difference will vary on how tricky the image is and how much post-processing is necessary. Take care, Joel Hi there,

I think Rolf did a good job a interviewing and editing. I was less than average at explaining :)

@Norman: this is all part of your workflow: if you start with a RAW file and edit / print in 16 bits, you will see a difference from a JPEG from camera edited in 8 bits.
Now HOW MUCH of a difference will vary on how tricky the image is and how much post-processing is necessary.

Take care,

Joel

]]> By: jeffegg2 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1940 jeffegg2 Wed, 16 Jan 2008 13:14:15 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1940 Thanks Rolf for another great tutorial/interview. The 8 bit problem is why I mostly shoot raw and then use UFRaw for my initial edits to keep edits mostly in 16 bit. Then using Gimp for just fine adjustments so I don't knarl up the shot with changes. I'm looking forward to a 16 bit gimp. I think photoshop will get a big hit from Gimp if it goes to 16, as that is the biggest argument against using gimp. Thanks Rolf for another great tutorial/interview. The 8 bit problem is why I mostly shoot raw and then use UFRaw for my initial edits to keep edits mostly in 16 bit. Then using Gimp for just fine adjustments so I don’t knarl up the shot with changes. I’m looking forward to a 16 bit gimp. I think photoshop will get a big hit from Gimp if it goes to 16, as that is the biggest argument against using gimp.

]]> By: Norman http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1936 Norman Wed, 16 Jan 2008 10:07:23 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1936 I do understand the maths involved and have seen how using the curves tool reduces the number of shades available. I suppose the number of shades available becomes significant if big enlargements are required to be printed or projected but, for the amateur whose images are generally viewed either on a computer or some other digital device, what is the likelihood of such differences being noticeable? I would like to see an image, produced by an amateur photographer, where it is necessary to make such big changes that the reduction in available shades becomes significant. I do understand the maths involved and have seen how using the curves tool reduces the number of shades available. I suppose the number of shades available becomes significant if big enlargements are required to be printed or projected but, for the amateur whose images are generally viewed either on a computer or some other digital device, what is the likelihood of such differences being noticeable? I would like to see an image, produced by an amateur photographer, where it is necessary to make such big changes that the reduction in available shades becomes significant.

]]> By: Ed http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1934 Ed Wed, 16 Jan 2008 09:33:24 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1934 Rolf Thanks for the great interview. Just a quick thumbs up for Joel's website - a great resource. It was invaluable when trying to set-up my Spyder2Express in Linux. Lots of valuable information. Cheers Ed Rolf

Thanks for the great interview. Just a quick thumbs up for Joel’s website - a great resource. It was invaluable when trying to set-up my Spyder2Express in Linux. Lots of valuable information.

Cheers
Ed

]]> By: Jorge http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1925 Jorge Tue, 15 Jan 2008 23:44:22 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1925 Hi Rolf, I haven't seen the video yet (I'm currently downloading it). I just wanted to share a recent tutorial I read that explained the 16-bit vs 8-bit issue VERY CLEAR: http://www.photoshopessentials.com/essentials/16-bit/ The tutorial is based on Photoshop but it doesn't matter in this case (if you want to have a clear understanding of why 16-bit is better). All the best, Jorge Hi Rolf,

I haven’t seen the video yet (I’m currently downloading it). I just wanted to share a recent tutorial I read that explained the 16-bit vs 8-bit issue VERY CLEAR:

http://www.photoshopessentials.com/essentials/16-bit/

The tutorial is based on Photoshop but it doesn’t matter in this case (if you want to have a clear understanding of why 16-bit is better).

All the best,
Jorge

]]> By: Rolf http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1923 Rolf Tue, 15 Jan 2008 22:53:00 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1923 Perhaps we were not clear enough about that. 8 bit are enough for looking at. Screens and JPEG don't have more and a lot of printers work also in 8 bit. But if you start to mangle the colours you do integer math in 8 bit. And that leads to losses due to rounding errors. You get less than 256 different shades in each channel and that starts to become visible as flat areas. Just try to tweak a curve in an image back and forth repeatedly and observe. If you mangle the colours in 16 bit you can loose lots of shades and still have more than you'll ever need. Convert that to 8 bit and you have a fine image. According to an interview with Sven Neumann GIMP will get 16 bit internal engine parts in the near future. The curves tool would be a good start. ;-) Perhaps we were not clear enough about that.

8 bit are enough for looking at. Screens and JPEG don’t have more and a lot of printers work also in 8 bit.

But if you start to mangle the colours you do integer math in 8 bit. And that leads to losses due to rounding errors. You get less than 256 different shades in each channel and that starts to become visible as flat areas. Just try to tweak a curve in an image back and forth repeatedly and observe.

If you mangle the colours in 16 bit you can loose lots of shades and still have more than you’ll ever need. Convert that to 8 bit and you have a fine image.

According to an interview with Sven Neumann GIMP will get 16 bit internal engine parts in the near future. The curves tool would be a good start. ;-)

]]> By: Norman http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1920 Norman Tue, 15 Jan 2008 20:41:01 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1920 Perhaps I dozed off or something but I failed to appreciate the differences between 8 bit and 16 bit. Did I miss some examples showing the difference or what? There were some super images though. Perhaps I dozed off or something but I failed to appreciate the differences between 8 bit and 16 bit. Did I miss some examples showing the difference or what? There were some super images though.

]]> By: I’m on meetthegimp.org « Linux Photography http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1918 I’m on meetthegimp.org « Linux Photography Tue, 15 Jan 2008 19:58:51 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1918 [...] Ah, and here is the link. [...] [...] Ah, and here is the link. [...]

]]> By: Rolf http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1917 Rolf Tue, 15 Jan 2008 19:46:16 +0000 http://meetthegimp.org/episode-028-are-8-bit-enough/#comment-1917 Well, I should have clicked on "Publish" when I set the timer for publication.... ;-) Well, I should have clicked on “Publish” when I set the timer for publication…. ;-)

]]>