Re: [Gimp-user] Bits per channel

[phanisvara das]

On Tuesday 29 September 2009 07:06:52 am Phil Labonte wrote:
>  have looked online on the Gimp site and I am not clear if Gimp
> supports 16 or 24 or 32 bit images?

as far as i know, GIMP processes colors with 16 bit precision when "use GEGL" 
is 
enabled from the "colors" menu. work is in progress to make it possible to 
fully 
support opening & saving of 16 bit (or higher?) images.

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ys phani.
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Re: [Gimp-user] Bits per channel

[Martin Nordholts]

On 09/29/2009 03:36 AM, Phil Labonte wrote:
> Hello,
> 
> I have looked online on the Gimp site and I am not clear if Gimp
> supports 16 or 24 or 32 bit images?
> 
> Can someone point me to the correct answer for Gimp 2.6.7

Hi

GIMP 2.6 does not and GIMP 2.8 will not work with higher than
8 bits-per-channel images. GIMP 2.10/3.0 will.

BR,
Martin

-- 

My GIMP Blog:
http://www.chromecode.com/

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[Gimp-user] Bits per channel

[Phil Labonte]

Hello,

I have looked online on the Gimp site and I am not clear if Gimp
supports 16 or 24 or 32 bit images?

Can someone point me to the correct answer for Gimp 2.6.7

Thanks
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Re: [Gimp-user] adjusting a horizon

[Daniel Hornung]

Hello Phani,

> > check out the "Corrective" mode
>
> please excuse my ignorance, but where do i find this mode?

http://docs.gimp.org/en/gimp-tools-transform.html#gimp-tool-transform
-> Tool Options -> Direction

You find this setting (and all other tool related options) in the tool options 
dialog, which is a dock that is usually just below the tool dialog itself.  
If you can't find it, I suggest the chapters on docks & dialogs in the GIMP 
help pages.

I hope you enjoy it,
Daniel


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Re: [Gimp-user] adjusting a horizon

[Daniel Hornung]

On Monday 28 September 2009, Jude T. wrote:
> I know I have seen, in the Gimp Manual, a way of adjusting a photo that's
> been taken on a bit of a slant - for instance a photo of a window. I have a
> photo where my horizon is on a slant. Can anyone remind me where in the
> Gimp manual it tells me how to adjust this? many thanks for any help!
> Jude

For all those tools mentioned in the other posts, check out the "Corrective" 
mode, preferrably with the transformation preview set to only "Grid".  With 
that, it's just fun to correct skewed photographs.

Daniel


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Re: [Gimp-user] Can't move guides

[Sven Neumann]

On Mon, 2009-09-21 at 14:55 -0700, Patrick Horgan wrote:
> Lately when I'm in move mode and move my cursor over guides they don't 
> get red and I can't move them.  Any attempt just moves the layer.  I'm 
> assuming a user interface change happened, so, what's the new way to 
> move guides?

Look at the Move tool options. Do you have the tool set to "Pick a layer
or guide" ?


Sven


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Re: [Gimp-user] brush precision

[Sven Neumann]

On Mon, 2009-09-28 at 12:08 +, Gary Collins wrote:
> 
> some time ago there was a thread about changing the brush icon between
> showing the brush size and a precise crosshair. I can't seem to locate
> that thread, but if I remember rightly it was suggested that the
> change should happen at mouse-click, or when holding the mouse button
> down.
>  
> Now I've just discovered, quite fortuitiously, that in photoshop (at
> least in Elements 2, so presumably also in PS7, on which the elements
> code was based) that you can toggle between these icons (i.e. brush
> outline vs. crosshair) using the caps-lock key.
>  
> Maybe that might be a good idea for GIMP also?

Maybe you should post that suggestion to the gimp-developer list. There
was a discussion about the brush outline recently and your suggestion
might turn out to be useful for that.


Sven


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Re: [Gimp-user] Can't recompose LAB: Specified layer # not found

[Dave 77459]

I found this old Q/A after trying the tutorial referenced:

http://www.dslreports.com/forum/remark,15173919

Here is the full list of steps:

1)Open Image
2)Go to Image>Mode>Decompose
3)Check LAB, Check Decompose to Layers, hit OK
4)Open Layers dialog. Make only the B layer visible.
5)Duplicate B layer, set "B Copy" to overlay (Opacity is 100%).
6)Merge both B layers (Image>Merge Visible Layers/CTRL-M) Choose Expand as
necessary (though other options don't make a difference in this case) Hit
Ok.
7)Repeat steps #4 through #6 for the "A" layer.
8)Select "L" layer, apply a slight S curve, mostly adjusted towards the dark
end of the curve. (GIMP's overlay is calculated a bit differently)
9)Image>Mode>Recompose and Make sure you select LAB with the correct layer
order.

Following the help provided below (Copy, Anchor), I could do it.  But I have
a question regarding Step 9 above.  Is the order of the layers important?
It seems that the layers are tagged, so as long as the original layers are
present, the order shouldn't matter.  Right?

Not to confuse issues, but my original reason for looking at the above page
was for this PS tutorial:

http://freeonlineclasses.net/photoshop-tutorials/photo-effects/the-golden-glow.html

On page two of this tutorial, when they pick the B channel (from LAB), they
get an orangy cast.  I faked this by picking the B layer from the LAB
decomposition, then color changing to shift red and yellow to the limits.  I
don't know what LAB is doing, but the result is pleasing and seems to mimic
the tutorial.  But is there a direct corollary to the golden glow tutorial?

Dave



On Wed, Feb 4, 2009 at 10:08 PM, wrote:

> Quoting Colin Brace :
>   :
>:
> > 5)Duplicate B layer, set "B Copy" to overlay (Opacity is 100%).
> > 6)Merge both B layers (Image>Merge Visible Layers/CTRL-M) Choose Expand
> as
> > necessary (though other options don't make a difference in this case) Hit
> > Ok.
> > 7)Repeat steps #4 through #6 for the "A" layer.
> >
> > However, after following these steps, when I click the "Recompose"
> command,
> > I get an error message on the status line:
> >
> > Specified layer [some number] not found.
>
> The problem is that 'Recompose' relies upon the layer IDs of the three
> layers and your merging of two layers results in the new layer being
> given a different layer ID.
>
> As a work-around, you need to duplicate your B layer twice and work
> with the two copies, leaving the original layer untouched. After you
> have completed your editing and merged your copies together, perform
> an "Edit->Cut", Paste it onto the original layer, and Anchor the
> floating layer.
>
> Unlike Merging, pasting and anchoring will not change the layer ID of
> the original layer and Recompose will function as expected.
>
>
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Re: [Gimp-user] adjusting a horizon

[Patrick Horgan]

Joe Carsto wrote:

  
  On Mon, Sep 28, 2009 at 2:42 AM, Jude T. 
wrote:
  I know I have seen, in the Gimp Manual, a way of
adjusting a photo that's been
taken on a bit of a slant - for instance a photo of a window. I have a
photo
where my horizon is on a slant. Can anyone remind me where in the Gimp
manual
it tells me how to adjust this? many thanks for any help!
Jude
  
  

Klaus Goelker's book GIMP 2 for Photographers has great
information on this.

Patrick



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Re: [Gimp-user] adjusting a horizon

[Joe Carsto]

On Mon, Sep 28, 2009 at 2:42 AM, Jude T.  wrote:

> I know I have seen, in the Gimp Manual, a way of adjusting a photo that's
> been
> taken on a bit of a slant - for instance a photo of a window. I have a
> photo
> where my horizon is on a slant. Can anyone remind me where in the Gimp
> manual
> it tells me how to adjust this? many thanks for any help!
> Jude
>
> --
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Jude T.

Try watching this video at http://meetthegimp.org.  It will show you how to
use both the rotate and prespective tools.
http://meetthegimp.org/episode-037-the-two-minute-holiday-shot-edit/

Joe Carsto
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[Gimp-user] brush precision

[Gary Collins]

hi,
 
some time ago there was a thread about changing the brush icon between showing 
the brush size and a precise crosshair. I can't seem to locate that thread, but 
if I remember rightly it was suggested that the change should happen at 
mouse-click, or when holding the mouse button down.
 
Now I've just discovered, quite fortuitiously, that in photoshop (at least in 
Elements 2, so presumably also in PS7, on which the elements code was based) 
that you can toggle between these icons (i.e. brush outline vs. crosshair) 
using the caps-lock key.
 
Maybe that might be a good idea for GIMP also?
 
/Gary


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Re: [Gimp-user] Blurry text, layout->print problems, why?

[phanisvara das]

On Monday 28 September 2009 03:16:52 pm Carusoswi wrote:
> >Well, actually, I created one copy of the business card as an independent
> image.  Text in that image was flattened along with other elements.

that's where you get the fuzzy-ness from. you can copy & paste text layers 
between images without having to flatten them. once flattened, the text is just 
a 
bunch of pixels, not vector definition of letters anymore.

text can be re-sized w/o loss of quality; once you flatten the image, scaling 
of 
the raster image will affect it's quality, particularly if you make it larger.

you can copy and pate text layers, also repeatedly, and keep them as such until 
the very last step, before printing. that way you shouldn't get fuzzy outlines.

--
phani.
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Re: [Gimp-user] adjusting a horizon

[phanisvara das]

On Monday 28 September 2009 02:59:17 pm Jude T. wrote:
> >Tools > Transformation > Rotate

this should be the first step in straightening out an image with distorted 
perspective, as you get when you don't hold the camera straight. 

after getting _something_ straight, either the middle of the image, or an 
important part somewhere else, you'll have to adjust the perspective. either 
choose tools -> transform tools -> perspective, or the perspective tool from 
the 
toolbox.

you'll have to play around a little to find the ideal perspective shift. if you 
change the perspective too much, the photo will look weired. after adjusting 
the 
perspective you can undo & redo, and repeat the process if necessary.

online manual links:

http://docs.gimp.org/2.6/en/gimp-tool-rotate.html
http://docs.gimp.org/2.6/en/gimp-tool-perspective.html

i didn't see a tutorial dealing with this subject, but you'll find lots of 
helpful information in there: http://gimp.org/tutorials/

-- 
phani.
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[Gimp-user] Blurry text, layout->print problems, why?

[Carusoswi]

>On Sunday 27 September 2009 10:37:30 am Carusoswi wrote:
>>  the smaller text (phone number,
>> address, email address, etc) printed looking rather fuzzy and of low
>> resolution. 
>
>after creating the text, do you keep it as text layer, or do you merge it
with 
>another layer, or by some other means rasterize it?
>
>text should scale without loss of quality as long as it's not rasterized.
once 
>you do that, you can't change the size anymore without loss.
>
>Well, actually, I created one copy of the business card as an independent
image.  Text in that image was flattened along with other elements.  I am not
certain if I could have copy/pasted it otherwise - maybe, I'll have to try
that.  In any event, I used that little image and pasted it repeatedly into a
new 8.5 x 11 inch image to create a page of 10 cards that would print on the
card stock I use.  I purposely have not flattened that image so as to preserve
the opportunity to make adjustments to the position of the 'cards' after
running a couple of test prints.

Naturally, when I go to print, Gimp complains about the state of the
unflattened layers, and exports to the printer, flattening them in the
process, but that flattening is not saved.  However, in answer to your
question, I reckon I'd have to say that the text in question has been
flattened twice, once in its life in the original 1-card image, and a second
time as it is sent to the printer by Gimp.

Should that degrade the quality?  I do that (sending unflattened images to
the printer) all the time with photos, but I don't notice any degradation in
them?

Someone else did tell me to check the resolution of my original - it was set
to 72 x 72, and cannot be changed without changing the size of the image.  

I'll have to start from scratch trying a much higher original resolution and
see if that helps.

Thanks for the reply.

Caruso

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[Gimp-user] adjusting a horizon

[Jude T.]

>Jude T. schreef:
>> I know I have seen, in the Gimp Manual, a way of adjusting a photo that's
been
>> taken on a bit of a slant - for instance a photo of a window. I have a
photo
>> where my horizon is on a slant. Can anyone remind me where in the Gimp
manual
>> it tells me how to adjust this? many thanks for any help!
>> Jude  
>>
>>   
>Tools > Transformation > Rotate
>
>Andre
>

Thanks Andre.I'll play with this feature. It's not the way of adjusting an
image that I saw before - where there was a picture of a window. But I'm sure
it will do the job. Many thanks.
Jude 


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[Gimp-user] adjusting a horizon

[Jude T.]

I know I have seen, in the Gimp Manual, a way of adjusting a photo that's been
taken on a bit of a slant - for instance a photo of a window. I have a photo
where my horizon is on a slant. Can anyone remind me where in the Gimp manual
it tells me how to adjust this? many thanks for any help!
Jude  

-- 
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