I have access to Primiere pro on both PCs and macs. I noticed when I adjust levels on a PC there is a histogram just like Photoshop. Its very easy to calibrate the white and black point this way. On a Mac however, I do not see the histogram whenI try to adjust levels. Can someone shed some light on this? Is there a way to view the histogram on a MAc or tips on adjusting levels using only the displayed number sliders? thanks for your time on this matter.