Inkulu ihambile, Kwaye uMichihiro wayengumsunguli kunye nesikhokelo seSigma kususela kwimini yayo yokuqala, kodwa ngelishwa usishiyile.
I-Sigma yenze esidlangalaleni inqaku elisemthethweni lokuba ndikushiya ngezantsi-i-DSLRMagazine-:
«Xa uMichihiro Yamaki waseka iSigma Corporation ngoSeptemba 9, 1961, eneminyaka engama-27
Kwiminyaka eyadlulayo, uSigma wayengoyena mncinci kunye nomncinci kubavelisi abangaphezulu kwama-50 beelensi kunye nabaguquli ababekho ngelo xesha eJapan. Indlela yakhe yokulawula kunye nentshisakalo yabakhuthaza abalingane kunye nabasebenzi ngokufanayo, kwaye oku, ubukhulu becala, yintoni eyenze ukuba iSIGMA Corporation ibe luphawu oluphambili ekwenziweni kweelensi.
U-Yamaki waseka iSigma Corporation ngoSeptemba 9, 1961 ngokuphuhliswa kwesiguquli sokuqala seelensi, okanye "i-teleconverter." Ngeli xesha, uninzi lweefoto lwalukholelwa ukuba isiguquli seelensi sinokuba yi-afocal kuphela, uhlobo olunokuqhotyoshelwa kuphela ngaphambili kwelensi yekhamera, kunye ne-injineli ye-optical eneminyaka engama-27 ubudala, beka ithiyori ebonakalayo ejonge ezantsi. I-Sigma Corporation ibhiyozele isikhumbuzo sayo seminyaka engama-50 ngo-2011 noMnu Michihuro Yamaki osesenkampini yenkampani.
Kuyo yonke iminyaka yakhe kwishishini lokufota, u-Yamaki wagxila ekuveliseni ubuchwephesha bobuchwephesha bobuchwephesha obuphezulu ngamaxabiso aphakathi. Iinjongo zakhe kwinkampani bekusoloko kukwenza ukuba ubunjani bomfanekiso ophezulu bufikeleleke kubo bonke abafoti. Ukuza kuthi ga ngoku, waphumelela ekukhuliseni iNkampani ukusuka kumbutho ophethwe lusapho ukuya kumnikezeli ophambili wophando, umphuhlisi, umenzi kunye nomboneleli ngenkonzo weelensi, iikhamera kunye nokukhanya. Inkampani ngoku yaziwa njengeyona mveliso inkulu ezimeleyo yeelensi eziguqukayo kwihlabathi, namhlanje ivelisa ngaphezulu kweemodeli zeelensi ezingama-50 ezihambelana nabavelisi abaninzi, kubandakanya iSigma, Canon, Sony, Nikon, Olympus, Pentax kunye neSony.
Kwi-2008, phantsi kobunkokheli buka Mnu Michihuo Yamaki, I-Sigma Corporation ithenge i-Foveon, inkampani ese-California eyaziwayo ngokuphuhlisa itekhnoloji ye-X3 yemifanekiso, eyaziwa ngokuba yi "Foveon." Itekhnoloji yobunini, yokubeka kathathu kwimvakalelo yomfanekiso ithatha yonke imibala ye-RGB ephambili kwipikseli nganye ehlelwe ngamanqanaba amathathu-endaweni yepateni yeBayer-ukuhambisa isisombululo esigqwesileyo, imifanekiso yenkcazo ephezulu eneenkcukacha ezinamacala amathathu kunye nesiseko esityebileyo. Kunyaka ophelileyo, inkampani yabhengeza ukufika kwe-SD1, imodeli yenguqulelo, inee-megapixels ezingama-46 kwisenzisi somfanekiso othe ngqo, ezibonelela ngee-megapixels ezingaphezulu kwayo nayiphi na enye i-SLR yedijithali kulungiselelo lwe-35mm okwangoku kwintengiso. I-Sigma Corporation iqhubekile nomxholo wayo wokujongana nezikhewu kolu shishino kunye neemfuno zabafoti, ukuqala ngo-2012 ngokusungulwa kothotho lwayo olutsha lwe-Neo, idigital (DN) esuka kumgca we-CSC weMicro Four Thirds kunye ne-Sony Montutra E.
Kumsitho wangoSeptemba ophelileyo eJapan ukubhiyozela iminyaka engama-50 yenkampani, uMichihiro Yamaki uthathe ithuba lokuvakalisa umbulelo wakhe kubo bonke abaphumeleleyo.
UMichihiro Yamaki wachitha bonke ubomi bakhe kwiNkampani yakhe kwaye wayewuthanda umsebenzi wakhe. Uninzi lwezinto ezintsha kushishino zibangelwa yimpembelelo yazo. Kunyaka ophelileyo, wahlonitshwa ngokuzinikela kwakhe kumzi-mveliso wokufota kunye nemifanekiso ngenaliti yegolide ye-Photokina okanye ipini. Ngaye siphulukene novulindlela kumzi mveliso weefoto. Abasebenzi be-Sigma kwihlabathi liphela i-SIGMA bayalila umphathi wabo kunye nomhlobo wenkampani.
Ukongeza, uMnu Yamaki wakhonza amanye amaZiko anje ngala: Umbutho wamaJapan wokuPhathwa kweeNkampani, iZiko loYilo loomatshini baseJapan, Umbutho waseJapan Optomechatronics, uMbutho Wezithombe waseJapan, kunye neJapan Camera Industry Institute. Waye wawongwa ngembeko "yoMntu woNyaka" ibhaso elivela kwi-Photoimaging Manufacturers & Distributors Association (PMDA), kunye nebhaso le "Hall of Fame" kwi-International Photographic Council (IPC).