[X4U] Mysterious iPhoto 6 help please [2]

[Stroller]

On 17 Jul 2007, at 06:56, Germain M. wrote:
> ...
> Yesterday, I added 28 RAW photos to iPhoto 6. Happy me, I like th  
> app very much. A minute later, the program added 28 JPEGs without  
> my consentment in the "Modified" folders. I didn't do anything to  
> the 28 photos but look at them in full view mode. Oh yes I did work  
> one one single file. Still I find that iPhoto adds copies to the  
> "Modified" folders like whenever it feels to do so. Do someone  
> knows what's happening here?

...
(continued)

I think in your case the reason for these copies being made is that  
you imported the files in RAW format. You stated that iPhoto created  
the "modified" files as jpegs, which are a format iPhoto can view and  
modify. You can't crop a RAW photo as such - only create a bitmap  
copy of a RAW file and then crop that - so I think iPhoto is  
importing the images into its "native" format of jpegs so that you  
can view them within iPhoto and (in the future) edit them (if you wish).

Aperture may be better for managing RAW files, I think, as Aperture  
considers RAW files to be its native format. Aperture also stores  
jpeg copies of the RAW files it has imported, however, it consider  
these "previews" rather than its modified copies. When you crop in  
Aperture - or change the colour tone - you don't actually modify the  
image you just store a set of crop dimensions or colour corrections  
_to be applied to_ that image. Changes are applied to the jpeg  
preview that you're viewing in the editing window but it's only when  
you go to print or export the picture that they're applied to a fresh  
copy of the RAW file (the RAW file itself being retained unchanged)  
at full-pixel resultion. In this way Aperture is considered  
"lossless" photo editing for the sorts of photographic enthusiasts  
who are keen on using RAW files.

Stroller.