While I can not give you an awfull lot of input as I am still learning how to use my Canon T3 I currently have a 70-300mm with image stabilizer.. What I have found is that taking pictures of fish in the water do not come out very good no matter which lens I am using. There is just to much reflection coming off from the water. So if trying to get a picture of fish still in the water you may want to purchase a filter for your lens first. Also keep in mind exactly how far away your subject is. The more powerfull lenses need more distance when shooting pics at least. Good Luck and I hope this helps you out some..