I wanted a quality bag with enough space to take my A77, mounted his 70-300G plus a 16-50mm, mission accomplished. It remains even a space to take a windbreaker and a picnic. The sling is convenient especially since you can put a cross strap to block during operation. Comfort foolproof. The rocker Recuper bag for her camera is easy.
It is possible to install a tripod on the back of the bag with 2 mini belts.