70-200 var f4 is'siz .. 800-900 sularinda fiyati. tabi L serisi bir lens. yani 55-250 ile arasinda cok fark var.

Canon EF 70-200mm f/4.0 L USM Lens - Canon EF-S 55-250mm f/4-5.6 IS Lens Comparison - ISO 12233 Resolution Chart Results