The Sigma 50-100mm F1.8 DC HSM has been discontinued overseas, but it is still available for Nikon. There are a few lenses left on Amazon / B&H Photo / Adorama.
- Kitamura Camera: Discontinued products
- Map Camera: Discontinued products and new products in stock
- Bic Camera: Sales continue
- Yodobashi Camera: Low in stock
- *Nikon F mount is still available for sale.
via asobinet