Change the ISO or shutter speed

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?

Solution 1

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.

Solution 2

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

Comments

[Nikhil Manapure]

What about aperture?

[Sushobhit]

@NikhilManapure aperture - a space through which light passes in an optical or photographic instrument, especially the variable opening by which light enters a camera. In iOS you can not control the aperture of camera of device before iPhone 7. In latest device I am not sure.