Had a word with Joe De Marco about the perspective issues mentioned earlier and the drawing. Though there are a few issues with the drawing, the APM model has perfect perspective.The model I used was tested out with Chocks method on a very long! piece of tracing paper, it proved to be accurate. The only issue with it is the centre of vision (red cross) which should have been placed more towards the middle of the aircraft and not left at the front, this may account for the drawing appearing a little off skew.
This is another drawing of the same Pup from another angle with the centre of vision on the pilot. There may also be issues with this drawing but as in the earlier one that will be down to me. APM does not draw the aircraft for you, it provides an accurate guide (as long as your measurements are accurate) of aircraft in any chosen angle with perfect perspective. Because it keeps you very much in the loop drawing errors can occur, but as they say, practice makes perfect
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aviart aviation art perspective
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Cheers Terry