One reader brought to our notice this “apparent” bug: when you export photos (with iOS 7 filters applied on them) to iPhoto/ImageCapture etc., the filters are not exported with the photo.
As one commenter on the discussion forums put it, think of the filters as some “setting” of the photo. It's not applied when you export the photo and that kind of sucks because when you apply a filter, you want that to be applied completely even when you export the photo. But there's a workaround.
Incidentally, the filters are iOS 7/iDevice-centric. So the no-filter-in-export occurs only when you export the photos directly to the computer. Two other share/export options exist that export the photos WITH the filters.
How to Export iPhone and iPad Photos with Filters in iOS 7
Step #1. Open the Photos app and navigate to the album in which you have the photo.
Step #2. Apply the filter that you want to add to the photo.
Step #3. Once done, click on the share icon.
Step #4. Either choose iCloud to share to a stream or Email the photo to yourself
Obviously, email can get tedious if you've got a lot of photos to export. That's where photostreams come in handy. It's still a long, winding way to get the job done, but as far as I've seen, this is probably the only way to preserve the photo filters.
With the export to the photo stream, the photos get uploaded with the filters intact. You can then download the photos individually from iCloud.com (make sure the photostream is “public” so you can access them just through a link).
Not exactly a clean workaround but until iOS 7 lets you export photos with filters on them, I think this should fly.
Check out other iOS 7 tutorials over here.