CGAffineTransform изменяет view.bounds?

Views have both a frame (coordinates in superview's coordinate system) and bounds (coordinates in own coordinate system) property, but if you transform a view, you should not use or rely on the frame property anymore. If you are using transformations, work with the bounds property only, not the frame property, as transformations are applied to the bounds, but aren't necessarily reflected accurately in frame

http://iphonedevelopment.blogspot.jp/2008/10/demystifying-cgaffinetransform.html

Я хотел посмотреть, что он имеет в виду в приведенном выше абзаце, и напечатал «рамку» и «границы»
. И я вижу, что во время щипка меняется только «кадр».

- (IBAction)handlePinch:(UIPinchGestureRecognizer*)recognizer
{
    NSLog(@"scale: %f, velocity: %f", recognizer.scale, recognizer.velocity);
    NSLog(@"Before, frame: %@, bounds: %@", NSStringFromCGRect(recognizer.view.frame), NSStringFromCGRect(recognizer.view.bounds));
    recognizer.view.transform = CGAffineTransformScale(recognizer.view.transform, recognizer.scale, recognizer.scale);
    NSLog(@"After, frame: %@, bounds: %@", NSStringFromCGRect(recognizer.view.frame), NSStringFromCGRect(recognizer.view.bounds));

    recognizer.scale = 1;
}

вывод :(увеличение)

2012-07-02 14:53:51.458 GestureRec[1264:707] scale: 1.030111, velocity: 0.945660
2012-07-02 14:53:51.466 GestureRec[1264:707] Before, frame: {{0, 124}, {320, 160}}, bounds: {{0, 0}, {320, 160}}
2012-07-02 14:53:51.473 GestureRec[1264:707] After, frame: {{-4.81771, 121.591}, {329.635, 164.818}}, bounds: {{0, 0}, {320, 160}}
2012-07-02 14:53:51.480 GestureRec[1264:707] scale: 1.074539, velocity: 1.889658
2012-07-02 14:53:51.484 GestureRec[1264:707] Before, frame: {{-4.81771, 121.591}, {329.635, 164.818}}, bounds: {{0, 0}, {320, 160}}
2012-07-02 14:53:51.494 GestureRec[1264:707] After, frame: {{-17.103, 115.449}, {354.206, 177.103}}, bounds: {{0, 0}, {320, 160}}
2012-07-02 14:53:51.499 GestureRec[1264:707] scale: 1.000000, velocity: 1.889658
2012-07-02 14:53:51.506 GestureRec[1264:707] Before, frame: {{-17.103, 115.449}, {354.206, 177.103}}, bounds: {{0, 0}, {320, 160}}
2012-07-02 14:53:51.510 GestureRec[1264:707] After, frame: {{-17.103, 115.449}, {354.206, 177.103}}, bounds: {{0, 0}, {320, 160}}

Я что-то не понимаю или автор в блоге не прав?