Ingabe i-gelatin ingasetshenziswa ekusetshenzisweni kwezithombe?

Mina.Ukubaluleka Komlando​

i-gelatin yashintsha kakhulu ukuthwebula izithombe ngekhulu le-19, yathatha indawo yezinqubo ezinzima ze-wet-plate. Njengesihlanganisi kuma-emulsion esiliva e-halide, yasakaza ngokulinganayo amakristalu azwela ukukhanya efilimini, okwenza izithombe ezibukhali zibe zinhle kakhulu. Amandla ayo okukhukhumala emanzini avumela intuthuko elula, okwenza izithombe zitholakale kalula kubantu abangazi lutho.​

II.Izinzuzo Zobuchwepheshe​

I-Gelatin ilawula ukukhula kwekristalu ye-silver halide, ithonya isivinini sefilimu kanye nokuqhathanisa. Ama-emulsions ezinhlamvu ezincane zezithombe asebenzisa amazinga aphansi e-gelatin, kuyilapho amafilimu esivinini esikhulu adinga i-gelatin eningi ukuze kuqiniswe amakristalu amakhulu. Iphinde ivikele ama-emulsions ekulimaleni komshini kanye nomswakama, okwandisa isikhathi sokuphila kwefilimu. Ngisho nanamuhla, ukuhambisana kwe-gelatin namakhemikhali azwela ukukhanya kusalokhu kungalingani.​

III.Ukufaneleka Kwanamuhla​

Izithombe zedijithali zinciphise ukusetshenziswa kwe-gelatin, kodwa iyaqhubeka nokusetshenziswa kwayo okukhethekile: amaphepha okunyathelisa obuciko obuhle, lapho ukuthungwa kwayo kuthuthukisa ukujula kwesithombe; kanye namafilimu agciniwe, abaluleke kakhulu ekuzinzeni kwesikhathi eside. Izimboni ezikhethekile ezifana ne-medical imaging (X-rays) zisasebenzisa ama-emulsion asekelwe ku-gelatin ngenxa yesisombululo sawo esiphezulu nokuthembeka, okufakazela inani layo lobuchwepheshe elihlala njalo.​