Verilogus, on Aug 06 2012 - 16:43, said:

You don't need a formula to know that if your spotting range is 400 meters and the target only shows up at 300 it means the target has 25% camo.

If the equation were linear, you would be correct. It isn't, so you aren't.

Your way does not really allow for accurate calculation of the effects of Camouflage skill, Camo nets, or anything other than the base camo of the tank with no modifiers of any kind.

In your example above, it could also have a camo of ~13.7% and a Camouflage skill of 100. Or maybe it's only ~11.7% with 110 Camo skill and a net... unless it also has a fancy paint job.

Don't be lazy; do the math.