ipod touch 4g camera looks..Grainy/static/fuzzy/blurry in low light

i got a brand new 32gb ipod touch and the picture is terrible in low light but outside its ok, i was in my room with my moms 3rd generation iphone and my 4th generation ipod and her iphone had better quality when i took a picture of my poster, mine looked grainy and hers was just dark, any one know if this is supposed to be like this?