Thank you for writing.
The attached sample project demonstrates how to set the Opacity
of RadCarousel items depending on its SelectedIndex. Additionally, to make the transitions smoother, I have added AnimatedPropertySettings.
Please note that in order to continue receiving support from Telerik representatives, you should consider purchasing a license, as you were notified in the "Changing Selected Image Size!
" forum thread.
I hope this helps.
the Telerik team