Quote:
|
Originally Posted by mrthumbs
Im playing with my new Sigma F1.4 lens (55mm) (canon EOS) and i notice it produces 'grainy' pictures. Specially the area thats not focussed.
The picture below (may take a while to load) was taken under low light
circumstances with a 400 iso / 50 shuttertime.
Is this normal for low f lenses.. ?
|
Your grain is not coming from your lens, it's coming from your asa/iso setting. If your shooting in low-light situations, you have two options. Use a high asa/iso setting which may produce unwanted pixelation (grain) or use more light (which will enable you to use a lower asa/iso producing less pixelation (grain). If you are forced to shoot in a low-light situation and you have no additional light to add to the scene, you can always use a higher asa/iso (which will produce grain) and then run the pictures thru some software like
Noise Ninja which will tone down the pixelation/grain problem that your seeing.
Good luck
