I ordered the old JTAT SD/Nikon Mount Adapter from their website
http://www.jtat.com/sd/sd_main/SD_Nikon.html
And I received this email from Masakazu Tsuboi:
1, You ordered our old SA-Nikon mount adapter and it works only SD 10.
2. Just now we are ready to ship our new SA-Nikon mount adapter working with SD15, SD1, SDm1.
3, It makes perfect infinity on Nikon lenses.
4, The new adapter cost 17,500JPY including worldwide shipping cost.
5, If you hope to get new one, please send add US $50 to our PayPal account.
I paid the addition amount and received the new adaptor and rear element depth gauge.
The total cost is USD $200.
I do not own a Sigma SD1 yet so I have not tried it.
http://www.jtat.com/sd/sd_main/SD_Nikon.html
And I received this email from Masakazu Tsuboi:
1, You ordered our old SA-Nikon mount adapter and it works only SD 10.
2. Just now we are ready to ship our new SA-Nikon mount adapter working with SD15, SD1, SDm1.
3, It makes perfect infinity on Nikon lenses.
4, The new adapter cost 17,500JPY including worldwide shipping cost.
5, If you hope to get new one, please send add US $50 to our PayPal account.
I paid the addition amount and received the new adaptor and rear element depth gauge.
The total cost is USD $200.
I do not own a Sigma SD1 yet so I have not tried it.