I recently got an iPhone 5. Love the macro. I want to use it to take pictures of large and medium format negatives, but I cannot find an app that will invert colors properly. There are a few apps out there but they are buggy or full of ads, or both.
I'm going to use this page to document the making of my new app that helps me take pictures of large format negatives.
Progress so far: been reading up on OpenGL ES filters. Have to use OpenGL to make filters, especially if you are filtering the view directly from the camera (like I want to.)
About me: Photography. Electronics. iOS.
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