Hi iam at a stage now where i want to purchase a 70-200 lens and maybe a 1.4 converter to go with my canon 50d now here is the dilema i have the max budget of £900 and i want a good all round lens that i can use for close motorsport in the summer months and all round photography as well all year round and i would like some sort of is if possible i know its a tall order i have two options in mind but any opinions and suggestions would be a great help by the way all the photos i do are for myself its just a hobby
hope someone can help
Simon
hope someone can help

Simon