Tue Sep 18, 2018 5:05 pm
The AF sensors on the camera sensor are determining focus, based on contrast difference to find edges to focus on. The AF100,used a similar system to what BM is using with their cameras. The AF 100 has a focus meter, a segmented bar that extends to focus point, peaks then starts to shrink, at the peak, you are in focus. Nikon has a black dot on their DSLRs to show focus when using manual focus lenses.
That said, these displays worked but still not 100-percent accurate. A split image display would just be another version of what Nikon and Panasonic used. To work well, the AF point would need to be very small area, like Nikon is using on it’s new cameras.
I find the edge enhanced focus peaking to be the most accurate, as you can get the focus where you want it. Not where the camera “thinks” it should be.
Cheers
Denny Smith
SHA Productions