Scale the size of CALayer contents

Question

I have a few UIImageViews inside CALayer. How do I scale them all at once? I did try setting CALayer properties like la.contentsGravity = @"kCAGravityResizeAspect"; but the images inside the layer always display the original size.

Answer 1

if layer contains the image, this will scale it to 65%

layer.transform = CATransform3DMakeScale(.65, .65, 1);