Click the right arrow to open the Video Review Tool.
You'll see controls to allow you to move all the design elements to optimize the Horizontal Field of View (HFV) angle and Sight Lines.
Of course in a calibration, your goal is to review these parameters and possibly offer recommendations for improvement based on the existing design.
The "Top View" control shows a floor plan that shows the HFV for each row.
The range of acceptable HFV angles according to SMPTE is 33.3° (farthest) to 61.8° (closest) with the reference angle being 43.4°.
It's obvious that any change in the seating will affect earlier decisions made using your mode analysis, subwoofer placement and LCR placement. If you change the seat position it's a good idea to return to earlier checklist tools to review the effect of the change.
You can also review the sight lines by touching the "Side View" control.
The side view allows us to see other important screen parameters.
The top of the screen should not be greater than 35° as measured from the MLP. We call this the Maximum Viewing Angle.
The Maximum Viewing Angle is best if under 25° for neck comfort.
The Maximum Screen Center Angle (MLP to Screen Center) should not exceed +/-15°. Many prefer an angle in the 5° to 7° range.
Sight lines from rear rows should allow a clear line of sight to the bottom of the screen. This is where a proper riser height is so important.
Click the "Done" control to mark the item complete and add any comments or recommendations.
