Nick Gardner
Well-known member
19mm rods are standard for all modern ARRI gear. At least it's not goofy Panavision 5/8" rods 
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: this_feature_currently_requires_accessing_site_using_safari
Looks like the handles in those photos are mounted to the 19mm rods. If you used the 15mm base, the handles won't fit. Or am I missing something?
The weight really isn't that different between 15mm studio and 19mm. 15mm LW is only marginally lighter than both of those. I would make your decision more about what accessories you have available to you, whats on the used market, and whats at your local rental house. In my case that means 15mm studio or LW but definitely not 19mm.
_mike