| Re: IS or Not IS ??? I have used that 28-135 is extensively. I bought it about 5 years ago & I would say that the is function is amazing. However, I rarely use it now as i prefer my 24-70 2.8 L & my 70-200 2.8 L is. I had the non is 70-200 L for 7 years before I upgraded & the difference is unbelievable. I can now get shots that were not possible previously (eg.....low light) Personally, I would not purchase a non is lens if the is alternative is available in that focal length. & I would not purchase a non Canon lens & stick to L glass, having said that I do use the 100 macro & 15fisheye. Both non L
Cheers,
Paul |