The Sigma lens will not autofucus; it will manually focus only. The Nikon lens has a rather large hair between the elements. Both lenses are Nikon mount. Both are for APS-C sensor cameras. The item "SIGMA DC 17-70mm F/2.8-4 HSM + NIKON AF-S DX 18-70mm F/3.5-4.5 G ED PARTS/REPAIR" is in sale since Tuesday, October 5, 2021.This item is in the category "Cameras & Photo\Lenses & Filters\Lenses". The seller is "midwest_photo" and is located in Columbus, Ohio. This item can be shipped worldwide.