I have a 70-200 F4 IS USM..and a 50mm f1.4...so now i am thinking whether to take 17-55mm or 15-85 mm to complete my setup... basically...i like to shoot indoor..and use 50mm f1.4 all the times..to shoot my favorite items..and family shooting too either indoor or outdoor..and landscape shooting too...so i dont know to choose 15-85 or 17-55...
