dougpeterson
Workshop Member
Gerald,
You seem to be replying to things I haven’t said. Perhaps you are reading “FPS” as meaning “the Alpa FPS Camera” rather than “focal plane shutter”.
I was replying to a question about why the XT was designed to use the X-Shutter (which is a leaf shutter) rather than a focal plane shutter (FPS). I listed disadvantages of using an FPS including that if the XT used a FPS that this wouldn’t have enabled aperture control of the attached lens like the X-Shutter provides.
In other words, the X-Shutter turns a Rodenstock lens into an electronically controllable lens, which an FPS would not. A Sinar/Rodenstock eShutter accomplishes the same thing, but since it doesn’t integrate into the back it requires a separate controller, a cable, and a power source (aka battery) and no metadata other than approximate shutter speed makes it to the back/raw). The XT’s use of the X-shutter in each lens greatly simplifies that.
Given the rather mean-spirited nature of your posts, and the consistency with which you are misreading what I write, I won’t be replying to your posts further.
You seem to be replying to things I haven’t said. Perhaps you are reading “FPS” as meaning “the Alpa FPS Camera” rather than “focal plane shutter”.
I was replying to a question about why the XT was designed to use the X-Shutter (which is a leaf shutter) rather than a focal plane shutter (FPS). I listed disadvantages of using an FPS including that if the XT used a FPS that this wouldn’t have enabled aperture control of the attached lens like the X-Shutter provides.
In other words, the X-Shutter turns a Rodenstock lens into an electronically controllable lens, which an FPS would not. A Sinar/Rodenstock eShutter accomplishes the same thing, but since it doesn’t integrate into the back it requires a separate controller, a cable, and a power source (aka battery) and no metadata other than approximate shutter speed makes it to the back/raw). The XT’s use of the X-shutter in each lens greatly simplifies that.
Given the rather mean-spirited nature of your posts, and the consistency with which you are misreading what I write, I won’t be replying to your posts further.
Last edited: