I currently use a 400D and have the 75-300 kit lens. I came within a whisker of buying a 100-400L off a member here, it fell through when I looked at my account and realised there wasn't enough money in there. Sorry to the member in question for wasting your time.
I am now thinking that perhaps upgrading my 70-300 to the 70-300 IS USM.
Currently I'm struggling to get sharp photos in low(ish) light due to not being able to keep the shutter speed high enough so I'm hoping the IS will help with this.
Is the 70-300 IS USM a good upgrade for my current lens, is it a good compromise for the 100-400L until I can afford that?
I'm just an amature and don't make any money from my photography, I enjoy shooting wildlife and nature stuff as well as travelling photos.