So I found a few people on a local car forum that are cool with hanging out and letting me use their cars for some practice shooting so i was looking for some quick tips on shooting cars. I've seen some great car pictures on here so I figured someone would be able to give me some quick pointers. The equipment I have at my disposal is: 40d Tamron 28-75, Canon 50 1.8, Canon 85 1.8, Canon 70-200 f4L, Canon 580 EX II, 550, Sunpak 383, and Vivitar 273 (which I prob won't use since it'll only pop at full power since I don't have that stupid resistor to use the manual controls). I've also got a random assortment of light modifiers, 2x 32" convertable umbrellas, 1x 43" convertable umbrealla, and an Omnibounce. I don't have a CPL so I don't really know how to help control reflections or if I'll need to. I was thinking that I'd probally just stick to bare bulb and try shooting at a pretty short range since I don't really have any cool wide angle stuff. What are the absolute no-no's that I should avoid, and is there any sort of noobie formula that I can stick to so I don't embarras myself? Thanks guys, I guess you gotta start somewhere right?