Controlling size / position of UINavigationItem titleView

Instead of using your image view as the title view, create another view that contains the image view. Set that view as the title view of the navigation item; now you’re free to adjust the image view’s frame within the title view.

You can control size and position of UINavigationbar titleview. Don't set imageview as titleview directly. Instead create a custom UIView and then set its frame as per your requirement and add your titleImageView as its subview.

UIView *backView =[[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 40)];// Here you can set View width and height as per your requirement for displaying titleImageView position in navigationbar 
[backView setBackgroundColor:[UIColor greenColor]];
UIImageView *titleImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"SelectAnAlbumTitleLettering"]];
titleImageView.frame = CGRectMake(45, 5,titleImageView.frame.size.width , titleImageView.frame.size.height); // Here I am passing origin as (45,5) but can pass them as your requirement. 
[backView addSubview:titleImageView];
//titleImageView.contentMode = UIViewContentModeCenter;
self.navigationItem.titleView = backView;

Hope it helps you.