sigma 17-70 bokeh

Im looking for good bokeh with my lens what would be best to get this?
Would it be to zoom right in and get distance between the subject or to get up close and use wide open?

Any help would be great.

Same as any lens really. Large aperture and distance between the subject and background = bokeh

70mm, wide open, subject as close to lens as poss, backgroung far away... that will get you best blur

cheers I thought that but couldnt get results like my old lens (sigma 70-300 APO).
Will try and try again

From memory the 17-70 is f/5.6 at 70mm, which isn't overly fast, so bokeh might be a bit of a problem. Certainly not as good as bokeh at 300mm on the same f-stop. Try your bokeh at 17mm (f/2.8) and see what you get.

no you wont be able to... telephotos have a very narrow depth of field. (unless you were shooting at 70mm on the 70-300, at the same aperture. this should give you the same DOF as the 17-70 at 70mm at that aperture... but the blur 'quality' might differ.)

linarms wrote in post #2251076
From memory the 17-70 is f/5.6 at 70mm, which isn't overly fast, so bokeh might be a bit of a problem. Certainly not as good as bokeh at 300mm on the same f-stop. Try your bokeh at 17mm (f/2.8) and see what you get.

f/2.8-4.5