Hi, just wanted to share.
Somehow it came to my mind to shoot my 28-135 IS with a ringflash. And I got this kind of reflection. I held the flash off the lense (50mm 1.8 ) above the camera.
You can actually count lense elements by this
.
Strange that those little reflected rings all have different color and different angle. And those two on the bottom look like they just dropped down.
Just found this interesting...

17-40mm
75-300mm 
