hallo! i'm a newbie here. started off with a Canon EOS 500N (film) a few years back and now using canon G6 most of the time. hoping to invest in a DSLR in the beginning of next year. I think I'll stick to canon. Is it ok if I use my EOS 500N lens on 30D or 1D mark IIN? they are EF 28-80mm 3.5-5.6 and EF 75-300 4-5.6.