The SP500 and SP1000 were not for sale in Japan. The SP500 was introduced after the SPII in 1971 (Product Nr.23109) and SP1000 introduced after the SP-F in 1974 (Product Nr. The SP500 shutter speed dial shows a max speed of 1/500, like the SP1000 and SP the SP500 can actually shoot at 1/1000 by turning the shutter speed dial to an unmarked stop after 1/500. ).