如何锁定单反相机的B快门

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select * from tbl_Articles WHERE ArticleID=1608177 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1608177 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1608177 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1042765,1085154,1101273,992026,1081197,1081729,1087625,1084427,1077112,1085162,1062488,1065303,1062880,1076199,1070888,1043609,1106647,1100495,1092920,1074204,1075901,1092868,1094057,1073568,1132487,1069729,1101849,1048712,1064111,1069935) ORDER BY field (ArticleID,1042765,1085154,1101273,992026,1081197,1081729,1087625,1084427,1077112,1085162,1062488,1065303,1062880,1076199,1070888,1043609,1106647,1100495,1092920,1074204,1075901,1092868,1094057,1073568,1132487,1069729,1101849,1048712,1064111,1069935)