iPhone iOS4 low-level camera control? - iphone

Question

Is there a way to manually set low-level still-camera settings like shutter speed, aperture, or ISO in iOS4 on the iPhone 4? I don't think it exists in the official SDK but perhaps someone has found some private APIs to allow this?
I find my iPhone 4 camera to be unusable because even in fairly decent lighting, it always insists on shooting at the slowest 1/15th a second shutter speed causing motion blur if the subject is moving at all.
Thanks!

Answer 1

Not directly. Please file a bug report.
Yes, there may be private APIs available, but that's of limited use.

Answer 2

Try this, I could be useful for you:
#interface MyViewController ()
#property (nonatomic, retain) IBOutlet UIImageView *imageView;
#property (nonatomic, retain) IBOutlet UIToolbar *myToolbar;
#property (nonatomic, retain) OverlayViewController *overlayViewController;
#property (nonatomic, retain) NSMutableArray *capturedImages;
// toolbar buttons
- (IBAction)photoLibraryAction:(id)sender;
- (IBAction)cameraAction:(id)sender;
#end
#implementation MyViewController
- (void)viewDidLoad
{
self.overlayViewController =
[[[OverlayViewController alloc] initWithNibName:#"OverlayViewController" bundle:nil] autorelease];
// as a delegate we will be notified when pictures are taken and when to dismiss the image picker
self.overlayViewController.delegate = self;
self.capturedImages = [NSMutableArray array];
if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
// camera is not on this device, don't show the camera button
NSMutableArray *toolbarItems = [NSMutableArray arrayWithCapacity:self.myToolbar.items.count];
[toolbarItems addObjectsFromArray:self.myToolbar.items];
[toolbarItems removeObjectAtIndex:2];
[self.myToolbar setItems:toolbarItems animated:NO];
}
}
- (void)viewDidUnload
{
self.imageView = nil;
self.myToolbar = nil;
self.overlayViewController = nil;
self.capturedImages = nil;
}
- (void)dealloc
{
[_imageView release];
[_myToolbar release];
[_overlayViewController release];
[_capturedImages release];
[super dealloc];
}
- (void)showImagePicker:(UIImagePickerControllerSourceType)sourceType
{
if (self.imageView.isAnimating)
[self.imageView stopAnimating];
if (self.capturedImages.count > 0)
[self.capturedImages removeAllObjects];
if ([UIImagePickerController isSourceTypeAvailable:sourceType])
{
[self.overlayViewController setupImagePicker:sourceType];
[self presentModalViewController:self.overlayViewController.imagePickerController animated:YES];
}
}
- (IBAction)photoLibraryAction:(id)sender
{
[self showImagePicker:UIImagePickerControllerSourceTypePhotoLibrary];
}
- (IBAction)cameraAction:(id)sender
{
[self showImagePicker:UIImagePickerControllerSourceTypeCamera];
}
// as a delegate we are being told a picture was taken
- (void)didTakePicture:(UIImage *)picture
{
[self.capturedImages addObject:picture];
}
// as a delegate we are told to finished with the camera
- (void)didFinishWithCamera
{
[self dismissModalViewControllerAnimated:YES];
if ([self.capturedImages count] > 0)
{
if ([self.capturedImages count] == 1)
{
// we took a single shot
[self.imageView setImage:[self.capturedImages objectAtIndex:0]];
}
else
{
// we took multiple shots, use the list of images for animation
self.imageView.animationImages = self.capturedImages;
if (self.capturedImages.count > 0)
// we are done with the image list until next time
[self.capturedImages removeAllObjects];
self.imageView.animationDuration = 5.0; // show each captured photo for 5 seconds
self.imageView.animationRepeatCount = 0; // animate forever (show all photos)
[self.imageView startAnimating];
}
}
}
#end