Here's what I've found so far:
1) you can directly import from Aperture into iPhoto.
You are presented with a selection box and can select how to view photos, put filters on what you want to see, pick a whole project or individual photos in a project, etc.
Photo selection and filter method seems adequate.
I took 2 grab shots here:
LH shows viewing the projects themselves, name is not shown, the "hover the mouse to see the many photos scroll" works fine.
The RH shows looking inside actual project itself, you can select 1 or many to import.
Just grab what you want and drag/drop basically.
I thought "cool, this won't be so hard for my wife to select the past years shots for 2011 Calendar"..
Now the "rest of the story" as Paul Harvey used to say....
2) Now, here is the issue, the ONLY PP edit that comes across is your crop...yep I can't figure why but all other PP is LOST!
Plus, the file is sized at 50%, comes across as a jpeg, and seems quite low Res.
Example
Here is pict with PP in Aperture shown:
My Aperture PP version via Export from within Aperture @ 50% size and 12 Quality to desktop as jpeg, then import into iPhoto, then upload to Picasa web @ better quality (1600 pix max):
Direct import into iPhoto within iPhoto File Menu Show Aperture.
(you have no control over import method/quality as far as I can see).
Forget my kids silly faces, read the "rewards certificate" by the calendar here vs above, clearly detail/sharpening is lost/not applied, besides the other PP done in Aperture.
Taking the above.......in Aperture my wife will have to put keyword on the photo she wants on our 2011 Calendar, export those, then import into iPhoto.
Not creative or dynamic at all.....bad bad I don't understand why the PP besides crop is lost....
I was even thinking to export all 2011 photos them import those into iPhoto, that's only 380 projects for over 12,000 photos......
Can anyone else test to see if just my situation for the PP being lost?
I'm latest updates via Apple [Aperture 3.1 and iPhoto '09 8.1.2 (424) ]