The other night I found out how to really tell the condition of my paint.
It got dark before I could finish my detailing so I hung a spotlight from the front of my garage shining on my car about 4 feet away.
When I was polishing the car I noticed the glare created by the light highlighted small imperfections in the paint that were absolutely not noticeable during the daytime due to the glare from the sun.
I then set about remedying the situation and then would drag my fingers lightly across the paint (after using my liquid clay bar sustitute - Gel-gloss and a wet towel) I could still feel some very tiny tiny specs where my fingers would feel the imperfection that you could not see.
I then spent 2-3 more hours (5 hours total) gentley removing the imperfections highlighted by the glare and found by touch.
Finally got everthing back to showroom condition.
2004 E60 530is, Delivered 12/12/03, TiSilver/LGrey, PP, SP,PS, PDC, ACC, FRS, Step, Xenons, clear bra, body colored rear inserts. (Retired, 1983 henna red 320is)
2004 Corvette Z06 Commemorative Edition