Although I don't work with profiles and 3 view drawings like No.1, Felixdk, Santynus and rest of the friends from forum and all around world
, I agree with opinion that only changing actual photo within Photoshop is nothing more than playing or learning what Photoshop can do. Beside Photoshop, Illustrator, Corel Draw and some other graphic and prepress programs, I had had to learn maybe the best engineering design program - AutoCAD from Autodesk. This program is one of few able to be really precise in true designing of airplane or anything else: mechanical, architecture, electronics etc. Problem with 3 views that we deal with on our computers, is that they are in 99% SCANNED originals or their copies, not design drawn from scratch! There is problem with old wrinkled paper of original(at best) or just x
th copy of copy of original(at worst and very common). There is also problem with distortion during scanning, ability of man who performs scanning to achieve most from scanned material etc. So, for me, only really accurate profiles are those which are produced from "blank page" at your monitor in some of next programs: AutoCAD, Catia, Pro Engineer etc. Unfortunately, these are VERY expensive programs for enthusiasts like us - AutoCAD - 4000 Euros in Europe! Of course there are much cheaper and simpler substitutions for such works like Intelli CAD, Brick CAD, etc and most of them have prefix of suffix CAD. Only then those wonderfull profiles can be 100% technically accurate. For 3D rendering there is also 3D Studio MAX and lot of smaller programs that are helping in creating true masterpieces of electronic art - our friend and member of this forum Skyraider3D is living example and (in my humble opinion
) truly expert for this.