Lens Blur format used in Depthy expects a reversed image.

[JeffreyVest]

I'm noticing that in Depthy it expects darker stuff to be closer to the screen. However what is extracted from the files that the iPhone provides are reversed. Darker stuff is further away. That also seems to be the format expected by Facebook. A nice feature would be to have an option to invert the image luminance.

[hsnilsson]

Hi Jeffrey! Didn't see your comment until now. Will definitely look into this as soon as I get some time over (unless you want to submit a pull request of course).

A quick thought for now is that since the MPFExtractor doesn't actually modify any images, it might make sense to build that as a separate module.