I'm trying to tweet an image from an iOS5 app with code like this:
TWTweetComposeViewController *tweeter = [[TWTweetComposeViewController alloc] init];
[tweeter addImage:image];
I think my EXIF is being stripped out, but not sure if it is my fault, the iOS Twitter code or the Twitter service. I haven't found an authoritative answer yet, but How can I get geotagged pictures posted on twitter? seemed to point at Twitter and Twitter photo sharing goes live for all users had this in their news story:
Photographers will be interested to learn that all EXIF data, information that identifies what equipment was used to take a picture as well as the settings used, is stripped from the photos after uploading
I'm trying to find an official source or better authority that my code. I also tried to Tweet a picture from the Photos app, which also seems to have lost EXIF (location) data after upload.
From the Twitter Help Center:
What happens to the Exif data? I heard there are privacy concerns there.
We remove the Exif data on upload. It is not available to any consumers of your image.