Here's a beautiful ad shot by my friend Jo Willems ASC for Apple. I contacted him to see what it was shot on, thinking it was probably a big chip 6K Red Dragon and the old SuperSpeeds, as it had that shallow yet organic look (it looked too sharp for Master Primes). To my surprise he told me it was shot on the Alexa 65 and with Panavisions old 65mm prime series! He said they shot pretty much wide open and went as high as 2500ASA at times, with no apparent grain.
In any case, it looks amazing - great shots, great lighting.