on my previous statement: that Sony VW268 (VW285ES) does not respond to single button press for lens shift/zoom/focus.
It DOES respond to signle button press for lens shift/zoom/focus
Sorry for my mistake.
Today when I tried to lock down the lens, I heard there was this mechanical movement sound (zi - zi -zi) when I pressed the button.
Then I went close to the projector to confirm there was that sound.
And I went back to screen and press button multiple times - the focus is actually changing but the change for every press is so tiny and that partly contrubuted to why I didn't notice it last time (there is other resaon later).
Confirmed with Zoom and Lens Shift too.
But that's not the whole story - I can see the pixel definition now!
How could that happen?
Previously I set the focus with "Test Pattern" on.
This is a huge mistake because the "Test Pattern" on option seems applied some anti-alias, smoothed out the edge of pixels.
See below picture:
"Test Pattern" on (left) vs. "Test Pattern" off (right)
See? Without the pixel deniftion I just failed to achieve the best focus.
Then with the anti-alias effect, I failed again to tell the difference when I pressed the button, which led me to draw the false conclusion above.
And to further understand how tiny the steps of focus are, this is the dead on focus:
This is 10 presses away:
This is another 10 presses away:
After achieving the best focus, the greenish leakage got improved too. It is all related to focusing.
I was asked to take some photo of the greenish leakage. Below are left up corner and right up corner of "Test Pattern".
The leakage presents itself as a "tail" of the green dot. I could not get rid of it entirely, even with the dead on focus.
That said, I'm happier than yesterday with the pixel definition appeared finaly.