The spec affects what you see when light is reflected off of the surface.
Originally Posted by pearson sim
There is no yes or no answer as to if you have to edit the spec or not, it depends.
Some specs are rather basic, some not.
Slew your plane up in the air, with clear skies, and spin the plane around.
Looking at it from different angles you will see the effect of the spec.
Then you decide whether to edit it or not.
Most all "quality" repaints include a custom spec.
Also, you can use the spec to create some interesting effects.
WWOD---What Would Opa Do?
Farewell, my freind (sp)