iPhone iOS4 Low-Level-Kamerasteuerung?

Question

Gibt es eine Möglichkeit, Low-Level-Still-Kamera-Einstellungen wie Verschlusszeit, Blende oder ISO in iOS4 auf dem iPhone 4 manuell zu setzen? Ich glaube nicht, dass es im offiziellen SDK existiert, aber vielleicht hat jemand private APIs gefunden, um dies zu ermöglichen?

Ich finde meine iPhone 4 Kamera unbrauchbar, weil sie selbst bei einigermaßen ordentlicher Beleuchtung immer darauf beharrt, mit der langsamsten 1/15 Sekunde Verschlusszeit zu fotografieren, was Bewegungsunschärfe verursacht, wenn sich das Motiv überhaupt bewegt.

Danke!

Answer 1

Nicht direkt. Bitte reichen Sie einen Fehlerbericht ein.

Ja, möglicherweise sind private APIs verfügbar, aber das ist nur von begrenztem Nutzen.

Answer 2

die Sie interessieren, könnte ich Ihnen nützlich sein:

@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