Re: [Gimp-user] CR2 files

2013-02-13 Thread Matthew Miller
On Tue, Feb 12, 2013 at 06:11:09PM -0700, Gary Aitken wrote:
  You need either the dcraw or ufraw plug-in for GIMP. I prefer the
  dcraw plug-in. The ufraw plug-in has too many options about what
  should be done to the image when it is loaded. I don't know what I
  might want/need to do to the image until after I load it and look at
  it.
  So, the downside of this approach is that the decisions you make *during*
  RAW conversion are generally lossless operations; you can go back and do
  them differently with no destruction of data. If you start from a file
  converted in a certain way, you've already lost a lot of flexibility.
 Whoa! :-)  That is hardly a downside.  RAW conversion is something you can 
 dorepeatedly without degrading the image, as it always starts from the 
 original
 raw data and never modifies it.  You don't need to do anything with the ufraw

Let me clarify: it's a downside of doing a simple RAW conversion without
too many options and taking the result into Gimp to do the bulk of the
work.


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Matthew Miller   mat...@mattdm.org  http://mattdm.org/
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[Gimp-user] CR2 files

2013-02-12 Thread Denise Hamilton
I photographed the aurora while living in Alaska in RAW format which
produces a CR2 extension. Why will GIMP not open these photos? Are there
plans to expand GIMP to access these file types?

Thank you, Denise
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Re: [Gimp-user] CR2 files

2013-02-12 Thread Alexandre Prokoudine
On Tue, Feb 12, 2013 at 11:36 PM, Denise Hamilton wrote:
 I photographed the aurora while living in Alaska in RAW format which
 produces a CR2 extension. Why will GIMP not open these photos?

Please install UFRaw.

Alexandre Prokoudine
http://libregraphicsworld.org
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Re: [Gimp-user] CR2 files

2013-02-12 Thread Matthew Miller
On Tue, Feb 12, 2013 at 02:36:51PM -0500, Denise Hamilton wrote:
 I photographed the aurora while living in Alaska in RAW format which
 produces a CR2 extension. Why will GIMP not open these photos? Are there
 plans to expand GIMP to access these file types?

CR2 files are a type of RAW, and Gimp doesn't handle RAW files. There is a
UFRaw plugin for gimp (as just discussed on the gimp-developer list), but
you may be better served by a dedicated RAW converter such as RawTherapee,
DarkTable, or LightZone.

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Re: [Gimp-user] CR2 files

2013-02-12 Thread Kevin Cozens

On 13-02-12 02:36 PM, Denise Hamilton wrote:

I photographed the aurora while living in Alaska in RAW format which
produces a CR2 extension. Why will GIMP not open these photos?


You need either the dcraw or ufraw plug-in for GIMP. I prefer the dcraw 
plug-in. The ufraw plug-in has too many options about what should be 
done to the image when it is loaded. I don't know what I might want/need 
to do to the image until after I load it and look at it.

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Re: [Gimp-user] CR2 files

2013-02-12 Thread Alexandre Prokoudine
On Wed, Feb 13, 2013 at 12:03 AM, Kevin Cozens wrote:

 the image when it is loaded. I don't know what I might want/need to do to
 the image until after I load it and look at it.

If only there were viewers capable of displaying raw images... ;-)

Alexandre Prokoudine
http://libregraphicsworld.org
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Re: [Gimp-user] CR2 files

2013-02-12 Thread Matthew Miller
On Tue, Feb 12, 2013 at 03:03:38PM -0500, Kevin Cozens wrote:
 I photographed the aurora while living in Alaska in RAW format which
 produces a CR2 extension. Why will GIMP not open these photos?
 You need either the dcraw or ufraw plug-in for GIMP. I prefer the
 dcraw plug-in. The ufraw plug-in has too many options about what
 should be done to the image when it is loaded. I don't know what I
 might want/need to do to the image until after I load it and look at
 it.

So, the downside of this approach is that the decisions you make *during*
RAW conversion are generally lossless operations; you can go back and do
them differently with no destruction of data. If you start from a file
converted in a certain way, you've already lost a lot of flexibility.


-- 
Matthew Miller   mat...@mattdm.org  http://mattdm.org/
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