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ÀÒ¾¾ÃÔºµÒ (ÀÒ¾¤ÇÒÁàÃçÇÊÙ§) High-speed Photography
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ÀÒ¾¾ÃÔºµÒà»ç¹ÀÒ¾¢Í§ÊÔè§·Õèà¡Ô´¢Ö鹨Ãԧ㹪èǧàÇÅÒ·ÕèÊÑé¹ÁÒ¡ ÊÑ鹨¹àÊÕ¡ÃзÑè§ µÒ¢Í§àÃÒäÁèÊÒÁÒöàËç¹ä´é·Ñ¹ ¡ÒèѺÀÒ¾¾ÃÔºµÒ ¨Ö§ªèÇÂãËéàÃÒàËç¹ áÅÐà¢éÒ㨠ã¹ÊÔè§àËÅèÒ¹Õéä´é´ÕÂÔè§¢Öé¹ ÈÒʵÃì¡ÒöèÒÂÀÒ¾¤ÇÒÁàÃçÇÊÙ§ ä´éÃѺ¡ÒúءàºÔ¡â´Â Eadweard Muybridge ã¹»Õ ¤.È.1872 à¹×èͧ¨Ò¡à¢Òµéͧ¡ÒþÔÊÙ¨¹ìÇèÒ ºÒ§¨Ñ§ËÇзÕèÁéÒÇÔè§¹Ñé¹ ¢Ò·Ñé§ 4 ¢Í§ÁéÒ ÅÍ¢Ö鹨ҡ¾×é¹¾ÃéÍÁæ ¡Ñ¹ ã¹Í´Õµ·Õè¼èÒ¹ÁÒ ¡Åéͧ¶èÒÂÀÒ¾ áÅСÅéͧÇÕ´ÕâͤÇÒÁàÃçÇÊÙ§ ·ÕèÁÕÍÂÙèã¹·éͧµÅÒ´ à»ç¹¡Åéͧ·Õèãªéà·¤â¹âÅÂÕÊÙ§ 㹡ÒÃà»Ô´-»Ô´ shutter ãËéä´é¤ÇÒÁàÃçÇ·Õèµéͧ¡Òà (ÊÙ§ÁÒ¡) µÑÇÍÂèÒ§àªè¹ High Speed Cameras for Slow Motion Analysis ¢Í§ºÃÔÉÑ· Redlake ·ÕèÊÒÁÒö¶èÒÂÀÒ¾ä´é 500 à¿ÃÁµèÍÇÔ¹Ò·Õ ¶Ö§ 140,000 à¿ÃÁµèÍÇÔ¹Ò·Õ (âÍéâÎàÎÐ) áÅÐ Digital High Speed Video Imaging ¢Í§ ºÃÔÉÑ· Vision Research, Inc.
¡ÒèѺÀÒ¾¤ÇÒÁàÃçÇÊÙ§ ÊÒÁÒö¹ÓÁÒ»ÃÐÂØ¡µìä´éËÅÒÂÍÂèÒ§ ÍÒ·Ô ¡ÒõÃǨÇÑ´¢Ñ鹵͹¡ÒüÅÔµ·Õèãªé¤ÇÒÁàÃçÇÊÙ§ ¡ÒÃá¾·Âì ¡ÒÃÈÖ¡ÉÒ¡ÒÃà¤Å×è͹·Õè¢Í§ÊÔè§ÁÕªÕÇÔµ/Çѵ¶Ø àªè¹ ¡ÒÃÈÖ¡ÉÒ¤ÇÒÁ»ÅÍ´ÀÑ¢ͧ¤¹ã¹Ã¶Â¹µì ¢³Ðà¡Ô´¡Òê¹ à»ç¹µé¹
¡ÒöèÒÂÀÒ¾¤ÇÒÁàÃçÇÊÙ§·Õè¨Ð¡ÅèÒǶ֧º¹ web ¹Õé ¨Ð¡ÅèÒǶ֧¡Åéͧ´Ô¨ÔµÑÅ Casio Exilim EX-F1 «Öè§à»ç¹¡Åéͧã¹ÃдѺ Consumer ·ÕèÊÒÁÒöËÒ«×éÍÁÒãªéä´é·ÑèÇä» ÃÇÁ¶Ö§¡ÒöèÒÂÀÒ¾ â´ÂÍÒÈÑÂÍØ»¡Ã³ì¡Åéͧ·ÕèÁÕÍÂÙèã¹·éͧµÅÒ´ (¡Åéͧ¿ÔÅìÁ ËÃ×Í ¡Åéͧ´Ô¨ÔµÍÅ + á¿Åª) ºÇ¡¡ÑºÍØ»¡Ã³ìÍÔàÅç¡·Ã͹ԡÊì ·ÕèÍ͡ẺÁÒà¾×èͤǺ¤ØÁ¡Ò÷ӧҹ¢Í§á¿Åª ãËé·Ó§Ò¹ (»ÅèÍÂáʧ) ÍÍ¡ÁÒ ³ àÊÕéÂÇàÇÅÒ·ÕèàÃÒµéͧ¡Òà |
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ÍØ»¡Ã³ì·Õèãªé㹡ÒöèÒÂÀҾẺ Snap-shot ¡Åéͧ´Ô¨ÔµÍÅ ËÃ×Í ¡Åéͧ SLR : ¤ÇÃà»ç¹¡Åéͧ·ÕèÁÕÃкº manual ËÃ×ÍÍÂèÒ§¹éÍÂÁÕ B shutter á¿Åª : ÁÕ Guide Number ÊÙ§, ÊÒÁÒö»ÃѺ power ratio ä´é, ¶éÒÁÕ manual zoom ÍÕ¡ ¡çÂÍ´ä»àÅÂ ÍØ»¡Ã³ìÍÔàÅç¡·Ã͹ԡÊì¤Çº¤ØÁá¿Åª : ËÒÇÔ¸Õ¡Ò÷Óä´é¨Ò¡ web ¤ÃѺ Åͧ´Ù¨Ò¡ link µÍ¹·éÒ¢ͧ web page ¹Õé¡çä´é¤ÃѺ PC : Íѹ¹ÕéäÁè¨Óà»ç¹¤ÃѺ áµè¶éҨйÓÁÒãªéà¾×èÍ¡ÒäǺ¤ØÁẺ advanced ¡çä´é |
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á¿Åª¢Í§àÃÒÁÕ¤ÇÒÁàÃçÇà·èÒäáѹá¹è ??? ¢éÍÁÙÅ·ÕèºÃÔÉÑ·¼Ùé¼ÅÔµá¿Åª (ËÃ×Í·ÕèÀÒÉһСԵàÃÕ¡ÇèÒ flash, flash gun, speedlight, ... ) äÁèºÍ¡ã¹Ë¹Ñ§Ê×ͤÙèÁ×Í ¡ç¤×Í ¤ÇÒÁàÃçǢͧá¿Åª ¹Õèàͧ ´Ñ§¹Ñé¹ à¾×èͤÇÒÁ§èÒÂã¹àº×éͧµé¹ ãËé¶×ÍÇèÒ¤ÇÒÁàÃçǢͧá¿Åªâ´Â·ÑèÇä» ÁÕ¤èÒ»ÃÐÁÒ³ 1/1000 ÇÔ¹Ò·Õ ¡ÒûÃѺ Power Ratio ¢Í§á¿Åª äÁèãªèà»ç¹¡ÒÃà»ÅÕ蹤ÇÒÁà¢éÁ¢Í§áʧ (intensity) áµèà»ç¹¡ÒÃà»ÅÕè¹ ªèǧàÇÅÒ¡ÒûÅèÍÂáʧ µèÒ§ËÒ¡
´Ñ§¹Ñé¹ ¡ÒÃàÅ×Í¡ãªé Power Ratio ·Õè¶Ù¡µéͧ àËÁÒÐÊÁ ¨Ö§à»ç¹Êèǹ˹Ö觢ͧ¡Øá¨ÊÓ¤Ñ ã¹¡ÒÃËÂØ´àÇÅÒ ¢Í§¡ÒöèÒÂÀÒ¾¾ÃÔºµÒ áÅéÇ GUIDE Number ÅèÐ à¡ÕèÂÇ¢éͧ´éÇÂÍêлèÒÇ ? GUIDE Number ËÃ×Í GN à»ç¹¤èÒ·Õèºè§ªÕé¶Ö§ ¡ÓÅѧ(¤ÇÒÁáç)¢Í§á¿Åª á¿Åª·ÕèÁÕ GN ÊÙ§ ¨ÐÊÒÁÒöãªé¶èÒÂÀÒ¾ä´éÃÐÂзҧÁÒ¡¡ÇèÒ á¿Åª·ÕèÁÕ GN µèÓ GN ¢Í§á¿ÅªÊèǹãËè ¨ÐËÒ¨Ò¡¤èÒ ISO Áҵðҹ·Õè 100
¤ÃÒǹÕé àÃÒ¡ÅѺÁҴټšÃзº¢Í§ Power Ratio ·ÕèÁÕµèÍ GN ¡Ñ¹´Õ¡ÇèÒ ...
¨ÐÊѧࡵØàË繨ҡµÒÃÒ§ÇèÒ µÑÇàÅ¢áÊ´§ GN à»ÅÕè¹ä»ÍÂèÒ§äÁèà»ç¹ÊÑ´Êèǹ¡Ñº Power Ratio ·Ñé§¹Õéà¹×èͧ¨Ò¡ àÁ×èÍ¡ÓÅѧ¢Í§á¿Åª Ŵŧ令ÃÖè§Ë¹Öè§ ¨Ð·ÓãËé˹éÒ¡Åéͧà»ÅÕèÂ¹ä» 1 stop àªè¹ ¶éÒ GN ·Õè Power Ratio 1/1 ÁÕ¤èÒà·èҡѺ 220 (=22x10) àÁ×èÍ»ÃѺ Power Ratio à»ç¹ 1/2 ¨ÐºÕºãËé ˹éÒ¡Åéͧà»ÅÕè¹à»ç¹ f/11 Êè§¼ÅãËé GN ÁÕ¤èÒà·èҡѺ 110 (=11x10) áÅéÇ·Õè͸ԺÒÂÁÒàÂÍÐáÂÐ à¡ÕèÂÇ¢éͧÍÐäáѺ¡ÒöèÒÂÀÒ¾¾ÃÔºµÒà¹Õè ! ¡Ò÷Õè¨ÐËÂØ´¤ÇÒÁà¤Å×è͹äËǢͧà˵ءÒóì à¾×èͨѺÀÒ¾ãËéä´é¤ÇÒÁÅÐàÍÕ´ ªÑ´à¨¹·ÕèÊØ´¹Ñé¹ µéͧÍÒÈÑÂÊèǹ»ÃСͺ ¤×Í ¤ÇÒÁªÑ´ÅÖ¡·Õè¾ÍàËÁÒÐ »ÃСͺ¡Ñº ¤ÇÒÁàÃçǢͧá¿Åª·ÕèÊÒÁÒöËÂØ´à˵ءÒóìä´é «Öè§ÍÒ¨ÊÃØ»ä´é´Ñ§¹Õé :
ÃèÒÂÁÒàÊÕÂÂÒÇ ... ËÇѧÇèÒ ¤§¨ÐÊÒÁÒöãËé¤ÇÒÁ¡ÃШèÒ§ºéÒ§ (ËÃ×ͤÇÒÁÊѺʹ ¡çäÁèÃÙéÜ...) ¶éÒ¤Ô´ÇèÒ¢Ò´µ¡º¡¾ÃèͧµÃ§ä˹ ? ËÃ×ÍÍÂÒ¡ãËéá¡éä¢ÍÐäà ? á¨é§ä´é¹Ð¤ÃѺ |
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à¢çÁà¨ÒÐÅÙ¡â»è§ãÊè¹éÓ·Õèá¢Ç¹äÇé popping a hanged water balloon by a needle go to gallery |
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à¢çÁà¨ÒÐÅÙ¡â»è§ãÊè¹éÓ·ÕèÇÒ§äÇ麹¾×é¹ popping a water balloon on a hard surface by a needle go to gallery |
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ÁÕ´¿Ñ¹ÅÙ¡â»è§ãÊè¹éÓ·Õèá¢Ç¹äÇé slashing a hanged water balloon by a knife go to gallery |
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·Ôé§ÅÙ¡â»è§ãÊè¹éÓŧ¾×é¹ dropping a water ballon on a hard surface go to gallery |
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µÕÅÙ¡â»è§´éÇÂäÁé áÅЪé͹ hitting a water ballon using stick and spoon go to gallery |
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¡ÃÕ´ÅÙ¡â»è§·ÕèÇÒ§º¹¾×é¹ slashing a water balloon on a hard surface by a knife go to gallery |
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à¨éÒºÍÅâ´¹äÁé¡ÃкͧµÕ hitting a ball with a stick go to picture |
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á¤é¹Á×Í¡ÃкÕè Sword Man go to gallery |
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¡ÃÇÂÊÒÂÃØé§ ËÃ×Í ºÒ§¤¹àÃÕ¡ÇèÒ ªÑ¡à»ÃÕé§ Party Poppers go to gallery |
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»ÃзѴªÑ¡ Pull Bombs go to gallery |
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»ÃзѴ¨ÔëÇ Small Bombs go to gallery |
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à¨ÒÐ/¿Ñ¹ ÅÙ¡â»è§ (ÍÕ¡áÅéÇ) More Actions with Balloons go to gallery |
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¡ÃÇÂÊÒÂÃØé§ (ÍÕ¡áÅéÇ) Party Poppers (again) go to gallery |
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¡ÃÐà«ç¹ Splash go to gallery |
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¿Ñ¹/à¨ÒÐ/·Ôé§ ÅÙ¡â»è§ Mixed Test with Balloons go to gallery |
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¡ÃÐà·ÕÂÁ Tiny Poppers go to gallery |
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à¨ÒÐÅÙ¡â»è§ More Water Balloons go to gallery |
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à¨ÒÐÅÙ¡â»è§ More Water Balloons go to gallery |
| ¤Ó¶ÒÁ·Õè¶ÒÁºèÍÂæ (FAQ) |
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P i t a n S i n g h a s a n e h
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Writer : Dr.Pitan Singhasaneh