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Lets say a rectangular object has 100 x 200 cm dimensions. Suppose I need to draw an image(Parallel View) of the object from 25cm away. The apparent size of the object obviously gets reduced.

Referred Links:

http://www.giantitp.com/forums/archive/index.php/t-294360.html

Calculating size of an object based on distance

According to the above links, The Apparent Length = Original Length/25?? Or any other parameters influence the dimensions?

Sakala Bhargava Ram
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    As far as I know, the apparent size of an object scales inversely with the distance, i.e. twice distance means half the apparent size, and there are no other factors (assuming laboratory conditions) – M. Winter Feb 19 '18 at 15:34
  • The distance is relevant for calculating the changes in ratio and the field of view and the display. – Moti Feb 19 '18 at 19:09
  • Yes, the distance is relevant. But how does it effect? With Apparent Length become 4cm when moved 25cm away? – Sakala Bhargava Ram Feb 20 '18 at 03:29

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