更改ISO或快门速度

Question

I am tring to control the ISO and the shutter speed for the iphone, but it has no API in AVFoundation. It can only change the exposure, wb for iphone.

How can i control the ISO or shutter speed?

Answer 1

Now after iOS 8 I guess, Now you can change the shutter speed and ISO too.

By using this function

- (void)setExposureModeCustomWithDuration:(CMTime)duration ISO:(float)ISO completionHandler:(void (^)(CMTime syncTime))handler NS_AVAILABLE_IOS(8_0);

of AVCapturedevice class you can set shutter speed and ISO value both for more help you can see the class here .

discussion

refer this app for implementation here

Answer 2

You unfortunately have very little control over the iPhone camera. You can only lock or unlock the exposure, white balance, and focus modes.

Camera+ actually does not have control over anything you described. It used to be able to as it hacked the hardware, which is naturally a great way to get your app rejected by the reviewers.

I hope that iOS6 will give developers greater control as it is a PITA.