The Sigma weekend deal is back: Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary lens with a free USB dock for $789 only at Adorama (regular price: $1,089). This deal will expire at the end of Sunday EST.
B&H is selling the Contemporary lens in a kit with a 1.4x teleconverter for 1,289.
The Sigma Contemporary lens is lighter, cheaper and with a slightly simplified lens design compared to the Sport model that is almost twice as expensive: