Originally Posted by
B.S.Kumar
Toyo standards are very strong, and I don't think you'll face any problem. It would be better to mount heavy lenses on regular Toyo boards, not on adapter boards.
You don't need to modify the standard. An intermediate standard can be fitted with another lens board with a hole slightly larger than the diameter of the lens. Make the lens rest on the bottom of the hole. To avoid scratches on the barrel, the hole can be lined with foam or velvet.
Let me know if you want an intermediate standard.
Kumar
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