Sigma 10-20 F4-5.6Sigma 10-20 F4-5.6Sigma 10-20 F4-5.6Tamron 17-50 F2.8Tamron 17-50 F2.8Tamron 17-50 F2.8Canon Rebel XTi + Canon BG-E3 GripCanon Rebel XTi + Canon BG-E3 Grip