Camera + is one of the best camera for iphone Apps years ago, with features such as manual camera control, editing, image filters, stability and others.
The app costs $ 2.99, but you can download it for free by following the steps in this topic:
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First
Download Apple Store here
Second
Open the app, and press Stores, and scroll down to the bottom
You'll see app icon Camera + , click on it
It will open a new screen with a description of the app.
Click on the green button Download for free at the bottom
Will show you a message that he must refer you to the App Store
You will see a screen with a promo code, press the Redeem to download The app for free
This is everything, shoot like a professional Enjoy ..