Hi guys , i just bought my tamron 90mm and find that when i take insects i have to get real close and there is not enough light! thats not cool! and i find myself always shooting at iso 1600 which is not good cause i get alot of noise. i need help , i dont have an external flash and i think that if i use my cameras in built flash , it will scare the insects away, or blind a baby. i really need help. pls advice me what can i do to do macro/ portrait if this happens!