Chloride Papers

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Chloride papers are lower in sensitivity than are bromide papers, but they are faster to develop. Silver chloride papers usually are fully developed in 60-75 seconds, while typical bromide enlarging papers develop to the same level in 120-140 seconds.

Chloride papers are ‘contact’ speed. They are used under a bright light, not an enlarger, with a negative in contact with the paper. The final image size is the size of the negative, which, probably, means you are working with a large format film.

Current chloride papers are the revived Azo styled “Lodima” and the newly introduced Adox “Lupex.”

current chloride papersAdox announced Lupex with a very considerate offer of free shipping, so I bought a sample pack, and then a box of 8×10. I like the paper. The shipping from Germany to Texas takes 10 days — be patient. Lodima shipment takes only 4 days.

I have seen posts (apug) that Lupex is slower (not much) and warmer than Lodima. That isn’t what I see.

Lupex. Lodima Scan

Lupex v Lodima
Lupex & Lodima: 25 seconds exposure

both papers exposed to same light, for same time. Both papers were developed in the same developer at the same time. To compare color of emulsion, I’ve scanned the papers against a Kodak grey card.

Lupex Fomabrom Scan

Lupex compared to Fomabrom & Fomatone paper

Foma makes 2 papers which provide distinct differences between warm and neutral images. Lupex is closer to the Fomabrom 111.

Exposure Setup

contact light
Soft LED white light in darkroom

Exposure is set using a Gossen lightmeter in diffusion mode. The ASA is set to 320. The lamp is raised to a point where the EV is 10. With the lamp at that height, exposure is 25 seconds for the Stouffer TP 4×5 wedge.

Developer

I use different developers, depending upon the image requirement. Many current users follow the Amidol road (spell lodima).. my preferred formula is in my ‘formulary’ section; also Lupex responds well to variable contrast developers, even more so using the 2 tray method.

More recently, I’ve souped both in Lith developers — they each offer brilliant color ranges in both Fotospeed and Moersch developers. I will probably use Lupex and Moersch later for more than just verification and idea generation.

Notes: See Easy Amidol for developer notes

Resources for making emulsions:

https://www.processreversal.org/public/workshops/handmade_baltimore/HandmadeEmulsionResources.pdf

Kodak Publication AJ-12, “Making a Photographic Emulsion.” https://unblinkingeye.com/Articles/Emulsion/emulsion.html

EJ WAll

Click to access Photographic_Emulsions-EJ_Wall-1929.pdf

The Light Farm: http://thelightfarm.com/Map/ContactPaperDev/ContactPaperPart3.htm

1996, Kodak: Process for making high chloride tabular grain emulsion using multiple stream addition of iodide. Patent

April Birthdays

Posted on Posted in on photographers

Micky Allan (1944, 1 April – )
Lázaro Blanco (1938, 1 April – )
Etienne Carjat (1828, 1 April – 1906)
Max Ernst (1891, 2 April – 1976, 2 April)
Nigel Henderson (1917, 1 April – 1985, 15 May)
Daniel Masclet (1892, 1 April – 1969, 16 September)
József Pécsi (1889, 1 April – 1956, 7 October)
Martine Franck (1938, 2 April – 2012, 16 August)
Stella Snead (1910, 2 April – 2006, 18 March)
Émile Zola (1840, 2 April – 1902, 29 September)
James Wheeler Woodford Birch (1826, 3 April – 1875, 2 November)
Josef Breitenbach (1896, 3 April – 1984, 7 October)
Frank Gohlke (1942, 3 April – )
Bastienne Schmidt (1961, 3 April – )
Francesca Woodman (1958, 3 April – 1981, 19 January)
Ian Berry (1934, 4 April – )
Donald Blumberg (1935, 4 April – )
Max Dupain (1911, 4 April – 1992, 27 July)
William Henry Jackson (1843, 4 April – 1942, 30 June)
Herbert Bayer (1900, 5 April – 1985, 30 September)
Milton Miller (1830, 5 April – 1899, 14 January)
Giacomo Brogi (1822, 6 April – 1881, 29 November)
Harold E. Edgerton (1903, 6 April – 1990, 4 January)
David Moore (1927, 6 April – 2003)
Nadar (1820, 6 April – 1910, 21 March)
Edward W. Trevelyan (1881, 6 April – 1947, 10 April)
Rommert Boonstra (1942, 7 April – )
Neil Folberg (1950, 7 April – )
Arthur Allen Lewis (1873, 7 April – 1957, 20 March)
Lieutenant-Colonel Henry James Barr (1815, 8 April – 1881, 17 May)
Jules Itier (1802, 8 April – 1877, 13 October)
Alfred Cheney Johnston (1885, 8 April – 1971, 17 April)
Clarence H. White (1871, 8 April – 1925, 8 July)
René Burri (1933, 9 April – 2014, 20 October)
Art Kane (1925, 9 April – 1995, 21 February)
Robb Kendrick (1963, 9 April – )
Frederick Kilgour (1841, 9 April – 1919, 26 March)
Hansel Mieth (1909, 9 April – 1998)
Eadweard Muybridge (1830, 9 April – 1904, 8 May)
Karl Pietzner (1853, 9 April – 1927, 24 November)
Jennifer Shaw (1972, 9 April – )
Sander Steins (1973, 9 April – )
Mark Strizic (1928, 9 April – 2012, 8 December)
Cornell Capa (1918, 10 April – 2008, 23 May)
Risto Lounema (1939, 10 April – )
Edward David Ritton (1823, 10 April – 1892, 9 December)
Marc Yankus (1957, 10 April – )
Joel Grey (1932, 11 April – )
Spring Hurlbut (1952, 11 April – )
Macedonio Melloni (1801, 11 April – 1854, 11 August)
Andrew Charles Brisbane Neill (1814, 11 April – 1891, 19 July)
Imogen Cunningham (1883, 12 April – 1976, 24 June)
Earl L. Mohr (1919, 12 April – 1974, 27 January)
Christian Vogt (1946, 12 April – )
Allen A. Dutton (1922, 13 April – )
Brian Griffin (1948, 13 April – )
Alexander Edwin Caddy (1846, 14 April – 1904, 29 February)
Henry Dixon (1820, 14 April – 1893, 20 January)
Robert Doisneau (1912, 14 April – 1994, 1 April)
E.O. Hoppé (1878, 14 April – 1972, 9 December)
Anna Bohdziewicz (1950, 15 April – )
George Platt Lynes (1907, 15 April – 1955, 6 December)
Henk Thijs (1945, 15 April – )
Adam Clark Vroman (1856, 15 April – 1916, 24 July)
Thurston Hopkins (1913, 16 April – 2014, 26 October)
Jerome Liebling (1924, 16 April – 2011, 27 July)
Paul Martin (1864, 16 April – 1944, 7 July)
Kees Scherer (1920, 16 April – 1993, 19 January)
Pierre Toutain-Dorbec (1951, 16 April – )
Giovanni di Mola (1968, 17 April – )
Eliot Elisofon (1911, 17 April – 1973, 7 April)
Sherrie Levine (1947, 17 April – )
Michal Macku (1963, 17 April – )
Wynn Bullock (1902, 18 April – 1975, 16 November)
Charles Chevalier (1804, 18 April – 1859, 21 November)
Sara Facio (1932, 18 April – )
Frederick Kruger (1831, 18 April – 1888, 15 February)
Harold Burdekin (1899, 19 April – 1944, 22 July)
William Klein (1928, 19 April – )
Aimé Laussedat (1819, 19 April – 1907, 18 March)
Humphrey Spender (1910, 19 April – 2005, 11 March)
Frank Ward (1949, 19 April – )
Mario Cravo Neto (1947, 20 April – 2009)
Patrick Dolique (1949, 20 April – )
Captain Allan Newton Scott (1824, 20 April – 1870, 5 January)
Eve Arnold (1912, 21 April – 2012, 4 January)
James Higginson (1957, 21 April – )
Frances Cooke Macgregor (1906, 21 April – 2001, 24 December)
Watanabe Yoshio (1907, 21 April – 2000)
Alphonse Bertillon (1853, 22 April – 1914, 13 February)
R.B. Bontecou (1824, 22 April – 1907)
Laura Gilpin (1891, 22 April – 1979, 30 November)
Colonel William Henry Mason (1830, 23 April – 1910, 1 July)
Lee Miller (1907, 23 April – 1977, 21 July)
Michel Szulc-Krzyzanowski (1949, 23 April – )
Dallett Fuguet (1868, 24 April – 1933, 27 December)
Jan Groover (1943, 24 April – 2012, 1 January)
Laszlo Layton (1959, 24 April – )
Suda Issei (1940, 24 April – )
Charles Sheridan Blackwood Walton (1829, 24 April – 1889, 15 July)
Cy Twombly (1928, 25 April – )
Robert Adamson (1821, 26 April – 1848, 18 January)
Werner Bischof (1916, 26 April – 1954, 16 May)
Zbigniew Dlubak (1924, 26 April – )
Karol Kállay (1926, 26 April – )
Solomon Nunes Carvalho (1815, 27 April – 1897, 21 May)
Bruno Chalifour (1956, 27 April – )
Peter Keetman (1916, 27 April – 2005, 3 August)
Julius Adolph Paul Kuntze (1848, 27 April – 1905, 25 October)
Samuel F.B. Morse (1791, 27 April – 1872, 2 April)
Jack Welpott (1923, 27 April – 2007, 24 November)
Horst Faas (1933, 28 April – 2012, 10 May)
Frank Horvat (1928, 28 April – )
Werner Mantz (1901, 28 April – 1983)
Erich Salomon (1886, 28 April – 1944, 7 July)
Mariën Marcel (1920, 29 April – 1993, 19 September)
William Bradford (1823, 30 April – 1892, 25 April)
Georg Gerster (1928, 30 April – )
Albrecht Meydenbauer (1834, 30 April – 1921, 15 November)