Ive asked about this lens before, but most replies gave me a resounding NO NO leave it alone, but now my bad back is telling me, if i want to keep following my first love Wildlife, its this lens or change tack, i hate portrait/sport/and indoor photography, Urban is a maybe im just not sure which way to go, do i get the Canon EF 70-300 f/4.5-5.6 DO, or buy something else
or just get by with my 18-200 any ideas please thank you...Ray

