The Nokia Camera app has plenty of manual capture features.

If you have an older Lumia device and don't mind taking part in a beta trial, the Nokia Camera app is yours for the download. Formally known as Nokia Pro Cam, the beta version of Nokia Camera is now available for all Lumia users, no matter if your smartphone is of the "Pureview" variety or not. 

The Nokia Camera app offers photographers manual control of exposure, ISO and white balance. Initially the app was only available on brand new Pureview devices, though it was recently released for the Lumia 920, 925 and 928 too.

If you do decide to take part in the Nokia Camera beta, then you are asked to help Nokia sqaush any bugs by reporting glitches in the "Feedback" section of the app.

Beta testers must have a Lumia device running Windows Phone 8 with the Lumia Amber or Lumia Black update downloaded. If you meet those criteria, you can try the Nokia Camera beta here.