A. Clint Litton
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- Nov 21, 2007
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85 to 95 is a big jump; I wonder if a 5mm shim could be permanently affixed to the fronts of the other 4 lenses
It's not a huge jump...as others have mentioned, the Cooke miniS4's are 87mm (25 and up) and 110mm (18mm). I think the more significant question is why choose 85mm as an outer diameter in the first place? It's a wonky size. 95mm is a widely used standard (as are 80mm, 110mm, 114mm). So despite the 10mm jump in outer diameter, it'd make the set more appealing to people who need to rent a mattebox. It's great that BT makes a donut/clamp-on for this size, but outside of the owner operator that already owns a BT mattebox and this set of lenses, it's not something you'll likely find most any place you'd go to rent other gear.
I had the same disappointment with Cookes...if at all possible, make the lens set have a consistent outer diameter. If that's not possible, try to make them with standard sizes. Before the miniS4's, I think it was one random ENG lens that had an outer diameter of 87mm. Arri made a back for the LMB5, but it was hard to track down.