This EMS-UL SET wit IPD-Helicoid will offer the IPD range of 60(minimum) to 78mm(maximum) at the “D” of 160mm.(60-73 at the D of 155mm for example)
The total light path in this EMS is 166mm at the IPD of 64mm. The larger the IPD,the shorter is the light path. But considering the margin of 15mm, the back-focus should be secured about 180mm or longer.
Masuyama32mm adapter for the APM120SD-BINOCULAR drastically evolved!
A step is added to the inside for more stable and reproducible attachment and 48mm filter is attachable.
The movie shows how the extra filed of view comes to be possible.