When Do I Need an Anamorphic Lens for a Curved Screen

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Many people are not aware of the various properties of video screen aspect ratios. Simply put, aspect ratios define a rectangular screen’s shape. Aspect ratios define that for each unit of measurement for width, there are corresponding numbers of equal measurement in height. In other words, a 16:9 projector screen means that for every 16 units of lateral measurement, there will be 9 equal units of vertical measurement.


*The discussion below is based on actual chat transcripts with the omission of any personal/confidential material to protect the customer’s privacy. An example in this case is to change the contact’s identification name/number to “Customer” or a generic name.



  • [18:42] Customer: Hello
  • [18:44] Customer: Do you need an anamorphic lens to us curved screen Curve150H-A1080P3?
  • [18:44]        Rick: Hello, I’d be glad to assist you with this.
  • [18:45] Customer: anamorphic for a 16:9 HDTV screen?
  • [18:45]        Rick: No, this material is 16:9 format and does not require a lens.  Anamorphic lenses are for 2.35:1 or 2.40:1 “Cinemascope”
  • [18:45] Customer: No pincushion issue then?
  • [18:46]        Rick: Pincushion effect is a problem to widescreen formats but not HDTV (16:9). You can use the projector standard lens. As long you have the projector within the specification position and not over adjusting the focus/zoom setting. you are fine.
  • [18:47] Customer: You’re saying I shouldn’t be zoomed all the way out to fill the screen?
  • [18:47]        Rick: Correct, if the lens is zoomed out, you will experience the pincushion effect.
  • [18:47] Customer: what is acceptable then?
  • [18:48] Customer: no zoom?
  • [18:50]        Rick: If you able to position the projector in a distance where you don’t have to use the zoom excessively, for example if your projector specification gives you a throw distances between 12 to 15 ft away for a 150 inch. as long you are within the manufacturer specification you will be fine.
  • [18:51] Customer: I see….yes, my JVC is 16′ from screen and I need a full Zoom out to fill out 150″
  • [18:59]        Rick: Different  projectors perform in various degrees. I always recommend contacting the manufacturer on the particular performance specs.
  • [19:00] Customer: thx
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