Lens outside diameter question? Arri Ultraprime, Masterprime and Red 18-85

[Andrew Martin]

Hey guys. I have a quick question, i am about to start making an LED light ring to fit my Red, at the moment i have gone Nikon but will be going PL mount lenses quite soon. I need to know the diameter of a few lenses so that i can future proof my construction.

I need the diameter of an Arri Ultraprime, Masterprime and the Red 18-85 if anyone can help me.

I'm looking forward to making this - already got the flat topped LEDs on my desk ready to go.

Many thanks.

Andrew.

[Pawel Achtel]

All Master Primes except the 150mm are 114mm diameter.
You can go to Arri website for diameters of other Arri lenses.

[Andrew Martin]

Great. Thanks Pawel.

That just leaves the 18-85 which will be the biggest think. I think i remember reading its either 132 or 148 something around that if anyone can confirm.

Andrew.

[Matthew Duclos]

RED 18-85mm front dia = 142mm

[Andrew Martin]

Ah ha, thank you so much guys.

Andrew.