Has anyone experience of apps that manage the production of HDR output. I had forgotten the capability of Spark to take the necessary 3 different exposure level images and would love to try it. I have Photomatix on my Mac but when I’m out and about I would love to experiment on my iPad. There is quite a selection of apps but most seem to have not been updated for over a year so the developers have clearly given up improving them. Happy to pay for the app.