yes, that is a good question. Large raw files with added quasi masters after external edits are requiring plenty of space.
Now there are two files for the same image, the .CR2 RAW file of ~ 25MB and the new .psd/.tiff file, of approx 50-70MB.
However, this is not exactly true. You have your original image version with the original file, and you have the new quasi master/original of your edited image file. These two are not the same. And some of your other versions of this image may need the original master file.
If you delete the original, you will no longer be able to revert to that version. I keep the originals, to be able to revert the Photoshop edited image, just in case I want to be able to repeat the adjustments with other setting.
Thats a pretty prompt response Leonie:)
And yes, I do understand the difference between the .CR2 RAW which is actually the original file, and the versions in .psd or .tiff which are not original. So if we ignore that part of my comment, my question of 'how' to deal with two very large versions of the same file, still remains:) How do you deal with it?
This problem becomes even more acute in some specific cases where I shoot multiple exposures for HDR compilation, esp architecture. So now I have 3 (or 5) RAW files, 1 combined file (using an external HDR tool) and then another file created by PTLens which is invariably required for correcting curved lines.
So, how do you deal with these multiple files?
, my question of 'how' to deal with two very large versions of the same file, still remains:) How do you deal with it?
Since the two versions are de facto different images and I need them both, I keep them both. There is no help for it.
If the external edit does not require a high photometric resolution, I use 8-bit tiffs, to keep the quasi masters small. And I relocate the original originals to an external volume, where I keep the original files from the older projects. On my system drive are only the originals from the projects I am currently working with.
I hope others will chime in - I'd like to see more answers here
There is never any question in my mind about keeping the original RAW file -- always.
I applaude the flexibility that Aperture affords on the quasi-Masters, but one must always remember that later adjustments made in Aperture to any image that has round-tripped to Photoshop will not be seen in Photoshop if re-opened there. If needed you can make a Duplicate Version of any of these round-tripped files, and send that version to Photoshop to have the full combination of adjustments in PS, and post-PS adjustments in Aperture.
I generally don't worry about space, but just buy bigger and bigger drives. I often leave layers created in PS on the quasi-masters now stored in the Aperture Library. I have a few (very few) quasi-masters that exceed 1 GB in size, but that is mostly a lark. In general if related to images shot on my Nikon D800, the RAW files are about 45 MB, and Tiffs, 16-bit, are 200 MB plus. I appreciate the reference to lens correction, and will have to investigate your link.
Leoni, your response about about keeping originals from older projects onto external hard drives, raises another question in my mind.
Can you explain how you move RAW files to external drives? Is it done by manually dragging your originals from your hard disk to an external drive? How do you ensure that the data related to the editing of this file, which Aperture stores on its own within the Aperture library is also exported along with it? Otherwise, when you open this RAW file later on from the external drive, how will the edits you applied to it get linked to it? Does it not result in a loss of the edits you applied?
Can you explain how you move RAW files to external drives?
What I did is, I turned my library into a (partially) referenced library; see Aperture 3 User Manual: Working with Referenced Images
Is it done by manually dragging your originals from your hard disk to an external drive?
No, never move image files that Aperture has imported on your own. If I want the originals for older projects moved to another drive, I select the versions in the browser and use the command "File > Relocate original file(s)". Aperture will move the image files to the folder that I select. Since Aperture itself stores the files, it can keep track of them, and I can access them from Aperture just like before. Only they are no longer stored in the Aperture library but n an external volume.
The consequences are: When I want to edit these image versions or to export them, I have to make sure the external volume is mounted. But even when the external volume is not mounted. I still can use the images in my screensaver or in the media browser; I can rate them and tag them and use them in albums. Aperture will use the previews for this, if previews are available. So you should set Aperture to render high quality jpeg previews. That is what I have done with my older projects.
I'd say to save the images as LZW-compressed TIFFs, which Aperture does support. However, lossless compression of photographic images doesn't save much space, and in my testing, Preview's compressed TIFFs actually appear to take up more space than uncompressed TIFFs.
I don't have a copy of Photoshop for testing right now, perhaps Photoshop is better in this regard.