What the calculator will not show is if you make the Mounting Pole the wrong size for a given mount. People should generally allow for a fudge factor, even though most MFR ratings are within tolerance, if you combine peoples' own measurements with MFR tolerance, there can be quite an error.
As you noted, the calculator shows 16.2" of above for the V-shift in the details tab.
2.35 1 aspect ratio calculator manual#
If you make the screen too low, the projector will automatically move downward within the lens shift range, so NO manual calculations are necessary.
The V-shift bar in the calculator shows that restriction automatically, and it does it correctly for 2.35-2.40 lens memory. I know this can be confusing, in a future version, I may devise a clearer way of representing this in the Calculator, but I am not sure there is one. Many mounts need at least several inches. I do not enter the Min Mount Length data into the PJ Calculator for individual projectors, it is just telling you what your mount pole length range is that will fit within the boundary (move the Pj with the V-Shift slider to adjust the pole length). I am not sure the minimum mount pole length as it varies with every mount, there is a Chief mount that most use. But yes, this does not change anything else. Meaning you can lower the projector as much as you need to for extra mount pole length, since the JVC has plenty of lens shift. Ceiling Height is based on the screen size rather than the pole length (because you can still move the mount pole down more with larger screens and use more/less lens shift). Not sure I follow the question, but raising/lowering the mount pole length changes only the mount pole length, this is because the Req.
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