[WWI] drawing 3-views from photos

[Joel Christy]

  Hi All,
   
  The other day I scratched a model using only a profile photo of the subject. Once I had the correct length from my scale rule I reduced the photo on a copier until it was to my prefered scale at the moment and then carried on. A little later I came across a two view plan of ther aircraft( in my case a Curtiss Wright Junior sportplane) and it all looked pretty accurate. See http://wingsandwires.piczo.com  .  It may not be 100% pefect but until I find some 3 view GA drawings it'll have to do. BTW, I couldn't live without my SAM Scale Rule!
   
  Cheers,
   
  Joel
   
   
      
  

Diego Fernetti <dfernet0 at rosario.gov.ar> wrote:   Chris!
> Another issue that needs to be addressed is with the equipment that took 
> the
> photo. A wide angle lens will introduce distortion, and a telephoto will
> introduce compression. This is obvious with very wide angle lenses and 
> very
> long telephoto lenses, so it is easy to see there.

For our modeling purposes, is pretty safe to plot a drawing from a 
simplified perspective layout. If enough reference points are established, 
there's a whole circumfrence of vanishing points in every subject, and that 
may show the lens distortion in a graphic way.
Of course, this is unnecesary and way too laborious from a modeling point of 
view, as the innacuracies of a common lens are almost irrelevant in this 
case. Now if one would wish to build a flying replica...
D. 



 		
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