IPhoto on the iPad does support RAW images by the way, and other apps too.
That depends on what you are calling "support". If you read the iPhoto documentation carefully, you will see, that iPhoto does not do any more than import and store the raw files, but cannot edit the. For browsing the embedded jpeg preview will be displayed, and if you edt the raw image, the edited image will be derived from the jpeg preview. The raw file will never be developed.
See: Using RAW images with iPhoto for iOS: http://support.apple.com/kb/HT5182
When you import a RAW image to your iPad, iPhoto will display only the JPEG version of the image embedded in the RAW file. When editing a RAW image in iPhoto, the edits are derived from the embedded JPEG, and saved in JPEG format.
You cannot email RAW images from iPhoto, but you can share unedited RAW images to iTunes:
- Tap one of the photos you want to share to iTunes.
- Tap the share icon, and select iTunes from the options that appear.
- Follow the prompts to select one or more images to send to iTunes.
- In iTunes, select your device, and choose Apps.
- Scroll down to File Sharing.
- Select iPhoto, and then your photos. Click "Save to...".
If you made any edits to your image, iPhoto will send a JPEG version to iTunes instead.
If you import RAW+JPEG images, iPhoto will display and export the JPEG version.
Nowhere is stated, that iPhoto can process raw images.
With respect to the photo stream - believe, I am not happy with it, as it is. My post was meant to support your statement.
The IOS devices are computers, but not yet up to serious, high resolution image processing. Everything is reduced to smaller resolutions and only easy to navigate, if you only work with a small set set of images, not with a large photo library, which is o.k. for web sharing and emailing, but not for preprocessing the images for further edits on your computer.
Just try to delete 500 images at once from the iPad, when you are running out of storage. You will have to select them one by one, to delete them.