November 2007, Sony announced the HVR-Z7 handheld camcorder and the HVR-S270 shoulder-mounted camera. Both use the same three 1/3" ClearVid CMOS sensors and attain light sensitivity similar to that of the venerable DSR-PD170 while offering HDV recording in native interlaced, progressive scan and native progressive modes. The Z7 has 2 XLR audio inputs and HDMI output while the S270 has 4 XLR inputs and features HD-SDI output. Presently the HVR-S270 is the only HDV camcorder capable of recording onto full-size DV cassettes. In 2008 the HDR-FX1 and the HVR-Z1 were replaced with the HDR-FX1000 and the HVR-Z5, respectively. The major changes include utilizing CMOS sensors instead of CCD, and progressive mode shooting. The FX1000 records progressive scan video using pulldown, while HVR-Z5 offers native progressive recording. In November 2008 Sony restarted production of the HDR-FX7 camcorder, which had been discontinued a year earlier. Offered for almost half the original price, the HDR-FX7 bridged the gap between the HDR-HC9 and the FX1000. In summer 2009 Sony discontinued the HDR-HC9 on the North American market, but restarted its sales in spring 2010, this time advertising it not as an HDV camcorder, but as a MiniDV HD camcorder. MiniDV HD has never been officially presented as an alternative name for HDV. The other competing HD recording standard that uses DV cassettes is DVCPRO HD. In spring 2011 the HDR-HC9 is no longer available for purchase from the Sony's North American online store. Future of HDV JVC released its latest HDV camcorder — the GY-HD250 — in 2006. In September 2011 this model was discontinued on the U.S. market. The "B" modification of the older GY-HD200 was released in 2008 and discontinued in November 2009. The latest HDV camcorder made by Canon — the HV40 — was released in 2009, but it traces back to the HV20 developed in 2007, and was phased out of production during 2011, though stocks have lasted through 2012. The latest Sony consumer HDV model is the HDR-HC9, originally released in 2008 and discontinued on the North American market in 2011. 2008 was also the year when Sony presented the latest "advanced amateur" and professional HDV camcorders, namely the HDR-FX1000 and the HVR-Z5. All the three major manufacturers of HDV equipment — JVC, Canon and Sony — have heavily invested in development of MPEG-2 video compression scheme and continue to rely on it in their professional tapeless camcorder lineups: