Saturday, July 11, 2015
Camera Canon EOS 7D Mark II
α្ααេα Canon EOS
7D αោα Mark II αា αាαេα៉ាαα α្αααិααα αែαួα αែα αីαីαααួα αែαα្αើα‘ើααោα
α្αុαα ៊ុα Canon ។ αាα្αូααាαα្ααាα
αៅα្αៃαី 15 αែαα្αា α្αាំ 2014 αោααាα αα្αៃαα់αាα αែααាαα្αើααα់ αុα្αាαα’ាαេαិα 1,799 ។ αα្ααៈαិαេαααα់αាαឺαាαα្αុαα
ំαោαα’្αααែααាαα្ααិα្αិαាαα្αុααេα ្αា
20,2 APS- α§αααα៏ CCMOS αααីαេα’ូ HD αាα 10,0 α៊ុα ααα់α្αួα
αោα αាααាα់α្αα ាααាαα្α αីαីααែαα្αα់ viewfinder 1.0 × αាαួααឹααាαα្αααα្αα់ αាααα្αីα αោះα្αα័α្α Auto-focus
65 α
ំαុα
50 αិααα្α
α់ αីαីα៉ែα្α 100% αាααα់α‘ើα αៅα្αុααាααα្αូα Speedlite , αិα αួαα៉ែα្αα្αីα§αααα៏ αាα្αូααាααα្ααោαα្ααេα Canon EOS 7D ។
Camera Nikon D4
α្αុαα ៊ុα Nikon D4 αឺαា 16,2 αេα ្αា αំαាααិα្αាαីαៈα្αាα់αី α៊ុα αេααេα( 35 αីαីα៉ែα្α ) αាαេα៉ា α្αααិααα αែαួααែααីαីαα ( ααិααα DSLRs ) αែααាαα្ααាααោαα្αុαα ៊ុα Nikon αាαីααα្α αៅα្αៃαី 6 αែαααាα្αាំ 2012 αាαោαα័αα្αុαα ៊ុα Nikon D3S αិααាα αែαាំα ំαួααៃαាαα្αើα±្αα្ααើααួααាំαα្αុα 16.2 αេα ្αាαិα α§αααα៍α ាα់αα្αា α§αααα៏ αាαα្ααើαα‘ើα Auto-focus αិα α៉ែα្ααិααាαααα្ααាαα្αុααាααាα់α្αុαα្αឿα ISO αួα αែααាααα្αីααាα 204,800 αេះ។ αាαេα៉ាαេះα្αូααាααេα េαα្αាααៅα្αុααែαុα្αៈα្αាំ 2012 α្αុααα្αៃαα់αាααែααាαα្αα់α’αុαាαα៍αៃαាααα់αាααα្αែ $ 5999.95 ។ αាαឺαា αាαេα៉ាαំαូααើα្αីα្αើα្αាα់αាαα’α្αα αα ាំ XQD α្αី។ α្αុαα ៊ុα Nikon D4 αាααំαα αេααីα‘ា αααូαααα្ααាααិα α’្αααាαα័α៌αាα។ αាααាααាα់α្αα ាααួα αោααាαα’α្αាαាαα្αាα់αាαα្ααៃ 10fps , αា 20αើααីαីαα្αុះαេះαឹααូααាααំαោះα្αាα αិα្ααααាαាααេααេα 200 αាαួα α៉ែα្ααិα autofocus αេααេααα្αាα់ α៊ុα αីαួα។ α្ααិααើαាααាαα៉ះαាα់αិααាαα្αោαα’ាαα្αα៍α្αូααាαα ាα់αោα’α្αាαៃαាααាα់α្αα ាααោះα’ាα α្αូααាααើαα‘ើααα់ 11fps ។
Camera Sony NEX-7
α្αុαα ៊ុα Sony NEX -7 αឺαាαាαេα៉ា αីαីαα αែααាαα្ααាααីαៅα្αៃαី 24 α្αាំ 2011 αាαាαាαα្αាα់α្αូααួα αែααាααាαេα៉ាαα្α α់ αិααា mirrorless αα្αាαាααាααួαα ្αែαα្αα់αាαាααាααំαាα់αាαេα៉ា αំα ំαូα αែαួα αα្α α់ αីαីαα α្ααៃαី α្αααិααα
ααៈαេααែαα§αααα៏ αែααាααំα ំαα្αា αិα αα្ααៈαិαេααៃαំαូ APS-C αាαួα
αα្αα។ αាα្αូααាααេαំαα់αោααៅ αៅαាααααិαោα α’្ααα្αើα្αាα់α៉ាαα’α្αះα’α្αែα αិα α’្αααំαាα។ αាα្αូααាααំαួααោα ILCE - 6000 ( Ξ±6000 )
αៅα្αុααេααៃαាαα េαα្αាαααα់α្αួα α្αុαα ៊ុα Sony NEX- 7 α’ាα់α ្αា αាα[α្αូααាαα’ំαះα’ំαាα] αុααាααូααាα α្α’αំαុαα្αុαα ំαោαα៉ាα៊ីααααែααាαα្αាα់α្αូααាα αα្αួααែααាαួααែααាα mirrorless α្αូααាααាαα្αααោα DxO αααែα Labs αិα
αាαេα៉ាαាα APS-C αាαួα α§αααα៍α ាα់αα្αាα៏α្α’αំαុααី α្αុαα ៊ុα Sony ។ α្αុαα ៊ុα Sony A65 , α្αុαα ៊ុα Sony αិα NEX- A77 αែααាα α§αααα៍α ាα់αα្αា α្ααៀαα្αា 7 αិααាαααួα DxOMark ααុα αិα្αុ 74 , 78 , αិα 81 αៀαα្αា។ αុααាααូααាα αៃ NEX -7 αែαα’ាα α្αូααាα α្αៀααៀααាαួα D7000 α្αុαα ៊ុα Nikon ( α៊ុααាα់αα្α ូααី 80 ) αិα αាαា K- 5 Pentax ( α៊ុααាα់αα្α ូααី 82)
Camera Panasonic Lumix DMC-GF1 & Samsung NX20
httpsen.wikipedia.orgwikiFilePanasonic_Lumix_GF1_img_3537 α្αុαα ៊ុα Panasonic Lumix DMC- GF1 α្αូααាααេαែαាំαៅα្αុααែαα្αាα្αាំ 2009 αែααាαើααីαី αៅα្αុααាαេα៉ាααα់ G- α៊េαី Lumix α្αុαα ៊ុα Panasonic αាαα្αើα្αα័α្α α្αាααូα αើααីαីαួααាα់។ αាαាαំαូαំαូαα្αុααα្αាα់ " αូααិαិααα " αែααេះαាαិα្αិαα α α្αααីαាαេα៉ា Lumix G αាα α្αេααៀααោααα្αះαៃαាααួααα្α ូαα្αាαួααែαα’េα‘ិα α្ααិα viewfinder αេះ ។
httpsen.wikipedia.orgwikiFileSamsung_NX20_01
α្αុαα ៊ុα Samsung NX20 αាαាαេα៉ាαα្αួα αីαីαααែαααិααិααα់αោαα្αុαα ៊ុα Samsung αិαα ាα់αាំααី αែαេαាα្αាំ 2012 αាαាαα្αααំαែααីα្αុαα ៊ុα Samsung NX11 αួα។ αាαឺαាαាαេα៉ាαα្α α់αែαα’ាα α្αាα់α្αូα mirrorless 20,3 αេα ្αាαិ αោαα្αើα្αុαα ៊ុα Samsung NX - mount ។ NX20 α្αៀααៀααិααំα ំαα្αα់αូα αា αាαួααឹαα៉ាα៊ីααα αូαα័α្α Sony NEX , α្αុαα ៊ុα Nikon 1 αិα α្αាααូα α ំαួααួα Thirdsseries αៃα៉ាα៊ីααα ។NX20 αេះαួααα្α ូααាំαα្αα័α្αα្αួααិαិα្α αα្α α់;αុααាα αិααាαα្αα័α្α WiFi ααាαα‘ើααៅα្αុααាαα្αើαំαាα់α្αាα់αៅαឹααេαាαα្ααើαα្αាααូα αា α’៊ីα៉ែα αិα αα្αាααα្αα ។
α្ααិα្ααិα្αុ
αិα្αុαឺαាα្αα័α្αα្αα្αα្αាααួαα្ααេααែαេαាαំαើααាααៃαាαα្αើααឹααាαααួααំαេααោαααααាαុα’ាαាααោαα្αើαំαិααាαៈαាα្ααំαី។αិα្αុα្αូααាααេα្αើα្αាα់αើα្αីα’α់αំαៅαាαα្ααេααីαួαααាαំαូααិα្αុαាααα្αាα់αូααាα្ααំαីααើ្αααូααំαាαα្αុααាαα្αាα់α ើααិα្αុα្αូααាααេα ៅαាαើααំαូααា
Radio telegraphy។
αៅα្αាំα‘α¨α¦α€ αោαJames
Clerk Maxwell αាααα្α ាαααααេαែαα’α្αិααី(Electromagnetic)αាαα្αα្αα្αាααៅαើα’ααាα(Propagte on the space)αៅα្αុαα្αាំα‘α¨α§α₯
αោα Thamas Edison αាα’្αααα្αើαα’α្αិααីαα្αាαααα្αាំα‘α¨α¨α¦
αោα Herinrich Rudoft Hertz αាααោះαុα្ααៀααៅαួααំαុααα្α ាααីαααិαោαα៏ααα់αោα
Maxwell α ើααាα់αាααααើαααααិα្αុ(Radio waves)αេα ៅαាααααិα្αុ Herinrich waves។α្αោααααោα
Olive Lodge αឺαាα’្αααីα‘
αែααាαα
ាα់ααααិα្αុαៅα
ំαាαα₯α α៉ែααៅα្αុααែαីα ាα្αាំα‘α¨α©α€ αα្αាα់ααα្αាំα‘α¨α©α₯
αាααោα Alexamder Stepanovich Popov αាαααាαិαូα៊ីαααីα្ααេαα₯α្αាαាααααើααូαααααិα្αុα
ំαាαα₯α α៉ែααោះαែα។
αៅα្αុαα្αាំα‘α¨α©α¦
αោα Guglielmo Marconi αាααα្αើααូαα្αα័α្ααិα្αុ(αេααំαូααិα្αុα
ាα់α’α់αាααឺαូααំαេααឹαα
α្αៀααេ αឺαែαូααα)។ α្αុαα្αាំα‘α¨α©α§ αោα Edouard Branhy αាαααាαិαាαំាααាαα ៅαា
Radio Conductor α
ំαែαα―αៅα្ααេαα’α់α្αេααេα ៅαាBroadcasting
α្αោαααα្αុαα្αាំα‘α©α α§
αិα្αុα្αូααាαα
ាα់α្αើααា្αα់αឹαα្αើα្αាα់αៅα្αុαα្ααេααាαំាα α ើαα្αាំα‘α©α‘α’
αាα ាαα’ាαេαិα
αាំααាαα្αូααាαα្αើα្αាα់αាα
្αើααាααេ
αα្αាα់αααិα្αុα៏α្αូααាαα
ាα់α្αើαα្αើαាαាαាααៈα្αុαα្αាំα‘α©α’α αៅαី្ααα’ឺα៉ុα
αី្ααα’ាα៊ី
α’ំα្αុααេααα្α្αាααោααើααីα‘αាα ាααាαα្αើα្αាα់αិα្αុαើα្αីα’αិαα្αα៏αាααិαាααាαααៈαិα្αុ។
αោះαីαាαα
្α
ុα្αα្ααេះαα
្α
េααិα្αាαាααាααីαα
ំαើααៅαើα្αα័α្αα្αα្αα្αាααាαៈαូααα្αα៏α¬α’៊ឺααឺαែαα៏αោαα៏α្αα័α្αα្αα្αα្αាααាαααៈαិα្αុαៅαែαាααាααាα់αាαα
ាα់α’ាαα្αα៏αឹαេαេααិαααααែααើαα’ាα
α
ំαាααេααេαាα្αាα់αឹαα’ាα
αំαេααិα
្α
αាααាαα្αេαααាααៀααα។
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