fˌoʊɾoʊzɪŋkˈɑːɡɹəfi, sˈʌmtaɪmz ɹᵻfˈɜːd tʊ æz hˌɛlɪˌɑːzɪŋkˈɑːɡɹəfi bˌʌt ᵻsˈɛnʃəli ðə sˈeɪm pɹˈɑːsɛs, nˈoʊn kəmˈɜːʃəli æz zˈɪŋkoʊ, ɪz ðə fˌoʊɾəɡɹˈæfɪk pɹˈɑːsɛs dɪvˈɛləpt baɪ sˌɜː hˈɛnɹi dʒˈeɪmz ˌɛfˌɑːɹɹˈɛs wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd θɹˈiː wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvənti sˈɛvən ɪnðə mˈɪdnˈaɪntiːnθ sˈɛntʃɚɹi.
Photozincography, sometimes referred to as heliozincography but essentially the same process, known commercially as zinco, is the photographic process developed by Sir Henry James FRS (1803–1877) in the mid-nineteenth century.