Sigma 10-20mm F3.5 Ex DC HSM Lens For Pentax DSLRs Boya and the large side pocket

and the large side pocket will fit a water bottle or dock your tripod

refillable

Hahnel HL-13L for Canon Digital Cameras Capacity 3

12 to 24mm

Sigma 10-20mm F3.5 Ex DC HSM Lens For Pentax DSLRs Boya and the large side pocketWith an F3. 5 aperture throughout the entire zoom range, the 10 20mm F3. 5 is perfect for low light photography. Sigma wide angle lenses accentuate the relationship of subjects within a photo and thus become an important creative tool. This Sigma fast fixed aperture makes photography easier for the photographer who wishes to precisely control their depth of field and also for working with non TTL Flash systems. Super Multi layer coating reduces flare