HI everyone. im new here. i use canon 1000D and i've read that your shutter speed shouldnt be lower then your focal lense because it causes the image to blur, but i have a IS lense which helps and doesnt make the image blur does that mean i can go on a low shutter speed? because if i want to take a moving object indoor / outdoor i go on a high shutter speed about 1/60 my image comes out very dark, is there anyway to solve this either then using the built in flash? as i also heard the built in flash ruins pictures so i dont use it is this true? and one more thing, if i buy an speedlite / external flash unit, when it take pictures outdoor should i just higher the shutterspeed to about 1/60 since there is day time, if it is night i would lower the shutterspeed or use a speedlite and lower the ISO to about 100-200 or should i do i also use the external flash unit as i thought the external flash unit is only for indoors? could someone please explain a lil lost here, also kinda new to photography.