Durst Laborator 138
From Silvergrain Labs
Lens boards
For 100mm and longer lenses, use Lapla 39 (metal) or Siriopla 39 (plastic). These are flat lens boards with M39 thread. M25, M50 and unthreaded versions also exist.
I don't know the name, but a variant of Lapla with a protruding base, so that 240mm lens can mount with the reat element at the level of the lensboard.
Use Setopla 2839 (metal), Siriotub 39 (plastic) for 80mm lens. These are semi-sunk lens boards.
Use Latub for 50mm lens. This is a deeply recessed lens board.
For most of these lens boards, the number (such as 2839 and 39) indicates that they have M39 thread. 2825 and 25 would indicate that they have M25 thread.
Note that smaller Durst enlargers like M601 would use Lapla for 75mm and longer lenses, and Setopla 2839 for 50mm lens.
