Best of the bunch
I just paid and tested 4 different slow shutter apps and this one was most certainly the best.
The ones tested were Slow Shutter+, Top Camera, Shutter Controller and this one.
Slow Shutter + and Shutter Controller: Horrible low resolution, buggy and crashed a lot.
Top Camera: Amazing application with shutter control through volume button of earbuds (so can be used as a remote shutter), highest resolution (full resolution - they claim), but the quality is very low. Seems to be just up sampled HD video)
Magic Shutter: Most certainly the best one of the lot. Although not as high resolution as Top Camera, it has way better image quality. Does seem to crop the image, which I dont understand why, but even with the other apps zoomed, it doesnt come close to being as good. The controls are a little tricky to understand at first, but the Manual Exposure, appears to be the best one of all 4 of them. This was the most stable of them all. I wish there was a remote shutter and that it was optimized for the iPad.
I highly recommend this of all the slow shutter apps out there. I hope that remote shutter control comes in the future and for even higher resolution (like full video).
Also the HDR functions in this makes all the other HDR software look pretty bad. Im a professional photographer, and although I dont expect this to be like a dSLR, I was impressed.
All my tests were done with a tripod and fixed scene.
Kinematic about
Magic Shutter, v2.1.5