October 16, 200916 yr For general information on what this adjustment means:-If WideViewAspect=FALSEHorizontal FOV = (34.0) / (zoom factor)Vertical FOV = (Horizontal FOV) * (view height / view width) If WideViewAspect=TRUEVertical FOV = (34.0) / (zoom factor)Horizontal FOV = (Vertical FOV) * (view width / view height)Obviously, by using the VERTICAL FOV as the multiplier, the span-enabling of the Matrox device, derived from horizontal FOV, is not affected by the change in relative ratio.Also, as screens are wider than they are taller, and the multiplier 34.0 remains a constant, this explains the change in apparent zoom setting.In practice this means something very simple: With WideViewAspect=FALSE one has to click the `-` zoom button three times to get to the same position as the `wide` view starting positionIf WideViewAspect=TRUE one has to click the `=` zoom button three times to get to the same position as the `narrow` view starting position.It is the relative default FOV that changes, not absolute zoom - if you zoom in with three `=` clicks from the default wide setting, you get EXACTLY the same field of view as you do from WideViewAspect=FALSE. Converse is true from WideViewAspect=TRUE with three clicks out.Thanks for this explanation. So yes with WideViewAspect=True you do get what appears to be a wider zoom setting at startup but apart from that I can't see the miraculous change the original poster referred to.Bruceb Bruce Bartlett Frodo: "I wish none of this had happened." Gandalf: "So do all who live to see such times, but that is not for them to decide. All we have to decide is what to do with the time that is given to us."
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