txheej txheem ntub-collodion, tseem hu ua txheej txheem collodion, cov txheej txheem yees duab thaum ntxov tau tsim los ntawm Englishman Frederick Scott Archer hauv 1851.
Lub sijhawm twg yog lub caij collodion tsis zoo tshaj plaws?
Cov collodion negative feem ntau luam tawm ntawm daim ntawv albumen. Talbot's Calotypes (paper negatives) ua ntej collodion. Tau ntau tshaj peb caug xyoo, los ntawm 1850s txog 1880s, cov txheej txheem ntub dej sib tsoo yog txoj kev siv yees duab ntau tshaj plaws thoob ntiaj teb.
Thaum twg collodion portraits nrov tshaj plaws?
Lub collodion zoo, los yog ambrotype, thawj zaug tshwm sim nyob rau hauv 1853. Los ntawm 1860s cov txheej txheem tau ploj mus los ntawm txoj kev loj studios, tab sis nws tseem nrov nrog itinerant open-air kws yees duab mus txog the 1880s, vim tias portraits tuaj yeem ua hauv ob peb feeb thaum cov neeg zaum tos.
Yuav ua li cas cov kws yees duab tau collodion rau ntawm iav phaj?
Photographic collodion yog ib qho sib xyaw ntawm cov paj rwb nyoos (uas tau kho nrog nitric thiab sulfuric acids) yaj hauv ether thiab cawv, nrog rau me ntsis iodide thiab bromide sib xyaw hauv… lub collodion mus rau lub khob phaj, ces tig lub phaj kom txog thaum nws tag nrho saum npoo yog coated nrog tov.
txheej txheem dab tsi hauv 1878 hloov cov txheej txheem collodion?
Gelatin qhuav phaj Tom qab ntau yam kev txhim kho, cov txheej txheem tau mus rau hauv kev tsim khoom hauv xyoo 1878, hloov cov txheej txheem ntub dej sai sai. Cov phiaj tau yuav npaj-npaj thiab tuaj yeem khaws cia rau ob peb lub lis piam lossis ntau hli ua ntej raug thiab kev loj hlob.
