Originally posted by blue7 at 2005-5-25 22:52
750是标准1920x1080
有资料显示（因为索尼自己没有公开HDCAM格式），HDCAM记录1440*1080，所以我们再也不必为HDV的1440感到——先天不足！
只是，hdcam输出 HD-SDI是1920*1080非压缩，那是经过解码过的。
那我们采集HDV源码，变换到1920，不是一样吗。。。。
但是，有一点要承认 hdcam码率 143Mbit/s，还是有优势的，但至少分辨率的优势没有了。。。。
http://www.hd24.com/shooting_high_definition.htm
Panasonic DVCHD Pro 3 x 1 million pixel chips, sampled at 10 bit recording onto DVCPROHD format 4:2:2 compression recording1280 x 720 pixels. Camera can be selected to 4fps to 60fps, recorder always records at 60p repeating frames if neccessary, extra frames removed in post.
Sony HDW 750 3 x 2.1 million pixel chips 10 bit A/D, recording 1440x1080 onto HDCAM format at either 25p or 50i
Sony HDW 730 same as 750 except it works at 30p and 60i only.
Sony HDW f900 3 x 2.1 million pixels, 12 Bit A/D recording 1440 x 1080 onto HDCAM format 3:1:1. Records 23.976, 24, 25, 29.97, 30, 50i, 59.97 and 60i.
It is possible to record a 1920x1080 4:2:2 picture from the above cameras into SRWI feild recorder D5 or hard disk recorders with a wide range of compression options.
http://www.hd24.com/hdv_primer.htm