ProCamera's latest update adds an ISO boost button for low light shooting.

ProCamera's latest update, version 3.8 from app maker Jens Daemgen, now lets users decide when to take advantage of the iPhone 5's expanded high ISO capabilities, and, more interestingly, when not to do so.

ProCamera's built-in camera switches ISO settings automatically, but stops at a maximum ISO of 800 to produce the highest quality results. A new night capture mode with ISO boost must be toggled on to take advantage of higher ISO sensitivies, which expand up to 3200 on the iPhone 5. Although the feature doesn't give you full ISO control, ProCamera's latest update is the first iPhone app we've seen that's offered such control over ISO sensitivity. 

With night capture mode with ISO boost disabled, the app's built-in camera will choose a top ISO of 800.
Enabling night capture mode with ISO boost allows the camera to choose an ISO setting up to 3200 on the iPhone 5.

Additional features for the update include “anti-shake” video stabilaztion for the app’s video mode, and adjustable JPEG compression as well as faster photo saving for iOS 6 devices. Unfortunately, the ability to use the volume button as a shutter trigger has been removed “as requested by Apple,” according to the developer. 

ProCamera is available in the App Store for $2.99/£1.99, and is compatible with iPhone, iPod touch, and iPad. Requires iOS 5.0 or later. 

And if you're a fan of ProCamera HD for the iPad, ProCamera has also announced an iPad Photography Contest which starts today.