這支 Cooke Deep Field Panchro 100mm 4inch f/2.5 的後內膠合鏡組(第三鏡組)有脫膠離膠的問題
依照正常的處理程序，鏡片取出後，將兩鏡片分離，再重新黏合，並重新塗上鏡邊壁的黑漆，便可完美的解決脫膠離膠的問題！
This Cooke Deep Field Panchro 100mm 4inch f/2.5 suffered from a lens elements separation on its rear internal (3rd) lens group.
The problem can be totally solved by following the standard treatment procedure, taking out the lens -- taking apart the lens elements -- re-cementing the lens elements -- re-painting the black on the lens edge.
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