Photoshop saves files wherever you tell it to save.
iPhoto copies your photos into it's own private location - and I don't know much about that, so you'll have to talk to people who actually use iPhoto to figure out how to rescue your photos from it.
I am a stranger to iPhoto but hunted around a bit and came up with something useful. First, set the Finder to this style of dispay:
Go to iPhoto > Last Import and right click on any image presented.
Choose Show File. It will display the hidden folders (subdirectories) and provide access to all your images.
Drag the ones you want out of the hidden folder to your desktop, create a folder under Pictures, and park the images there.
Thank you ...
However, the iPhoto window does not show the folders created by Photoshop, only those created by the camera in the form of .jpg files. The Photoshop folders include .psd, .tif and and .png files. They don't appear in either Photoshop, iPhoto OR Finder.
I have discovered that the directories are made visible when another image file is saved using 'Save As' command (for some reason there is no 'Save' command available after loading an image). After a 'Save' the file can be reopened with the 'Open' command and the file(s) in question moved to another directory where they are accessible ... which is how I will deal with this in the future.
Neither Photoshop nor Bridge are able to find -- or even register -- the files that Photoshop itself creates. This is dysfunctional. Part of the problem is Apple and its incomprehensible file system. Another is the failure of Adobe to make itself fully compatible w/ OSX by crafting a stand-alone file system that can be installed along w/ Photoshop. Of course, w/ so-called 'creative cloud' there is less incentive for Adobe to modify CS6.
When you open a file like that in Photoshop, you can easily know its' location in your Finder.
Ctrl + click on its' document tab and choose "Reveal in Finder".
"When you open a file like that in Photoshop, you can easily know its' location in your Finder."
That's the problem ... the files are invisible, there is no way to click on them or a documents tab.
If you start with Finder => Pictures => iPhoto Library => error message: "Could not complete your request because Photoshop does not recognize this type of file." This is really silly ... I should be allowed to manage my own files on my own computer. Files don't appear in Bridge, either.
The folders have file names like: "8RFIXHYyQcqK15+QPf%8Kq" Usually each folder has one image. None is visible unless I use the 'Save As' control.
I access these files by opening an iPhoto image in Photoshop then using the 'Save As' control which shows view of hidden iPhoto library w/ Photoshop files. It is hard to use the 'Save As' control to manage the files: it's a Save As function and not much else.
The files and folders simply will not appear in Finder ... or in iPhoto ... or in Photoshop.
Ok. then this should help. I've found my pictures by ctrl clicking on the iphoto library and choosing "show package contents".
Thanks, that's great!
This does not help locating the Photoshop working files or folders, however ... only the iPhoto files.
Under the Finder menu > Preferences > Advanced, checkmark "Show all Filename Extensions"