Lch s ca my nhNu bn xung quanh ni bn hay lm vic, bn c th thy nhiu loi my nh khc nhau. Trn bn c th c mt chic in thoi di ng c chc nng chp nh, hoc mt webcam gn vo my tnh. Cha m ca bn c th s hu mt my nh k thut s. Nu bn tng s dng mt my nh k thut s, bn hn bit rng vic s dng chng l kh d dng. n gin ch cn tr vo n v nhn vo nt, vy l xong. Trn thc t, trc y, ngi ta s dng rt nhiu loi my nh khc nhau v vic i khi qu trnh chp v in duy nht mt tm nh s mt gn nh ton b mt ngy! Hy cng tm hiu lm th no m cng ngh my nh tin b vt bc nh by gi.Nm 1814 - Bc nh u tin c to ra vi mt chic hp ti. Chic hp ny c mt ngi Php l Joseph Nipce ch to ra. c c bc nh duy nht , ng phi mn trp ca thit b m trong sut tm gi lin tc! ng tic l bc nh phai sau .Nm 1837 - Mt ngi Php khc l Louis Daguerre, to ra mt hnh nh c nh s khai vi mt qu trnh ha hc c gi l qu trnh daguerreotype. My m ng ta s dng c gi l mt camera daguerreotype. V my c "c nh", hnh nh vn nh n tn ti thay v phai i. Bc nh Daguerre ch cn ba mi pht thay v tm ting nh Nipce.Nm 1841 - William Henry Talbot s dng mt my nh v x l phng php bin i mt cht to ra mt calotype. Vi iu ny, ng to ra nhng hnh nh tiu cc m c th c s dng thc hin mt s bn tch cc.Nm 1851 - Frederick Scott Archer to ra mt qu trnh mi c gi l qu trnh collodian. Nh c qu trnh ny, thay v phi ch i cho mt lng ln thi gian cho vic phi sng, cc nhip nh gia ch tn mt vi giy!Nm 1859 - Mt nhip nh gia ngi Anh tn l Thomas Sutton pht trin v ng k bng sng ch my nh ton cnh (panoramic camera). N c th ghi li hnh nh tri rng 120 !Nm 1871 - Richard Leach Maddox pht minh ra mt qu trnh nh tng gelatin kh c th bt nh t phim m bn bt k lc no sau .Nm 1881 - George Eastman v Henry Strong thnh lp Cng ty Eastman Dry Plate. Tuy nghe c v l lm, nhng cng ty ny sau tr thnh Cng ty Eastman Kodak!Nm 1888 - Eastman cho ra mt mt my nh Kodak c s dng mt cun giy phim thay v nhng tm giy phng.Nm 1900 The Brownie - mt chic my nh c gi thnh bnh dn c ra i.Nm 1913 - Oskar Barnack to ra mt nguyn mu my nh phim 35mm u tin. ng mt vi nm hon thnh vic pht trin n v cui cng ng gii thiu n vo nm 1924 vi tn gi Leica-I.Nm 1927 - Cng ty in lc General Electric to ra bng n flash. Cc nhip nh gia s dng chng gip lm sng ln nhng vng qu ti chp nh.Nm 1948 - Edwin Land gii thiu my nh Land Camera, l my nh t ng u tin c sn xut v bn i tr.Nm 1960 - Mt nh thu ca chnh ph M to ra mt my nh c th hot ng mc nc bin rt su. Loi my nh ny l cng c c lc cho cc lc lng hi qun.Nm 1973 - My nh chp ly ngay c nng cp vi phin bn mi hn. N c th chp, pht trin cc b phim mu v in n ch vi mt ln nhn nt duy nht!Nm 1978 - Mt nh sn xut my nh khc, Konica, to ra mt chic my nh c chc nng t ng tp trung mi ngi c th cm v chp rt d dng. iu ny c gi l "ngm v chp".Nm 1984 - Canon Inc. lm dy sng khi h tung ra mt my nh c chc nng in t. Pht trin quan trng ny l tin cho nhng thay i rt ln trong ton b ngnh cng nghip nhip nh trong vi thp k ti.Nm 1988 - Fuji cng b mu my nh k thut s u tin. N hot ng bng pin v c mt th nh 16MB.Nm 1990 - Dycam gii thiu Dycam Model 1. y l my nh k thut s u tin c bn rng ri.Nm 1995 - Ricoh RDC-1 l my nh u tin va c th chp hnh nh va c th quay phim.Nm 1999 Nikon D1 l chic my nh DSLR u tin trn th gii c sn xut bi mt trong nhng cng ty sn xut my nh ln. DSLR l vit tt ca Digital Single Lens Reflex; ni cch khc, n l mt phin bn k thut s ca mt my nh c. DSLR gip cc nhip nh gia c quyn kim sot nhiu hn i vi nhng g m h chp. Nikon D1 c s lng im nh l 2,74 megapixel.Nm 2012 - Trong thp k qua, cc cng my nh thc hin nhng pht trin my nh ng kinh ngc. Ngy nay, my nh DSLR c mc gi d chu hn nhiu. Ngoi ra cn c rt nhiu my nh k thut s dng ngm-v-chp nh hn cho nhng ngi ch n gin mun chp bc nh chp nhanh chng m khng cn lo lng v gi c cao v cc chi tit k thut. Ngy nay my nh vi tnh nng b sung nh loi b mt t ng, thm hiu ng, v cc tnh nng ti ln hoc truyn hnh nh n cc thit b hoc ngi dng khc. Ngoi my nh, chng ta cng c in thoi di ng, in thoi thng minh v my tnh vi my nh gn trong!

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