It should come as no surprise that Sigma's latest (and massive) 105mm f/1.4 DG HSM Art-series lens is cheaper than its Nikon equivalent. We already knew it would stay below $2,000, and now we finally have pricing for the new lens, which will ship in late June.
The Sigma 105mm f/1.4 Art lens will ship for $1,599, representing a savings of roughly $600 compared to the Nikon's AF-S 105mm f/1.4E at $2,196.95. Pre-orders are not yet available, but must be imminent.
Of course, while both of these are the only 105mm f/1.4 lenses around (Nikon's was the first), they are by no means identical or equivalent. Until more people can test the Sigma version, either could be better in a different way. Sigma has at times been criticized for its focus issues (it's generally excellent, but not quite up to par and occasionally front- or back-focused before adjustments), but compared to Nikon's, its 105mm is nearly double the weight, extends about an inch further in each direction with a massive 105mm filter thread (82mm for the Nikon), features three more elements, and comes with a tripod collar and foot because you won't want to carry this too long at over 3.5 pounds.
It's safe to say these are two very different lenses; and the quality comparisons could easily go either way. For now, a decent middle play for those who can't wait might be to spring for a used Nikon 105mm f/1.4E for $1,849.95. Or will you wait?
Update: The lens is now available for pre-order and is set for delivery mid-June.