Talk:Film speed
Dozens of broken citations rendering as visible "Cite error" text throughout the article
The article is riddled with broken footnote references that render as red "Cite error: The named reference X was invoked but never defined" text visible to readers. These are not hidden maintenance warnings — they appear inline in the References section in place of actual citations.
A partial list of undefined named references that are cited in the body but never defined:
DIN_1934_DIN-4512_Introduction(used ~6 times in the historical sections)RPS_2011_Progress_Medal_1882,Jones_1911_Cyclopaedia,Hasluck_1905_Jones,Sowerby,Konovalov_2007,Riat_2006Sheppard_1932_Dresden-Congress,Biltz_1933_DIN-Grade,Heisenberg_1930_Tagung,Voss_2002_Luther,Buckland_2008_Kinamo,Eggert_1932_Kongress-Bericht,Benser_1957_FarbigISO_6,http,iso.org(the three ISO standards cited as the current basis of the article — footnotes 17, 18, 19)Mulhern_1990_Letter,Goodwin_1938_emulsion_ratings,Roseborough_1996_PHSC-PC-22-3,Tipper_Weston,Hefley_1951_micrographs,Weston_1946_Ratings,Sangamo_1959_Weston-Ratings- All five GE references (
General-Electric_194x_GES-2810_Manual_GW-68,General-Electric_1947_GED-744_Film-Values,General-Electric_1942_GET-I717,General-Electric_1946_Ad_Hood) - All GOST references (
Gorokhovskiy_1970_Metrologiya,GOST_2817-50,Stroebel_1993_Encyclopedia,ZENIT_2011_GOST,GOST_10691-84,GOST_10691.6-88,GOST_10691.5-88) ISO 12232_2019,Gasiorowski-Denis_2019_ISO12232(used in both the ISO section and the digital camera section)- All six references in the "Digital camera ISO speed" section (
iso12232,CIPA_DC-004,Kodak_Sensor_ISO,CIPA_DC-008,Kerr_2007_Digital-Camera-Sensitivity,ISO-12232_1998,D200) - Marketing anomalies section:
Ilford_2010_Delta3200,TMZ,new TMZ,Ilford_2006_Delta-3200 - Reciprocity:
Lambrecht_2003_Way-Beyond - Table 1:
ASA_1961_PH2-12_12500,Vision_2016_Boosting,Canon_1966_Booster,Canon_1978_Manual_A-1,Nikon_2009_ISO_D3s,Canon_2009_ISO_EOS-1D_Mk-IV,Canon_2011_ISO_EOS-1D_X,Nikon_2012_ISO_D4,Ricoh_2014_ISO_Pentax_645Z,Nikon_2014_ISO_D4s,Sony_2014_ISO_Alpha_ILCE-7S,Canon_2015_ISO_ME20F-SH, plus the Sony/Pentax/Fujifilm camera refs and the two Leica R8/R9 refs
By my count there are roughly 50 distinct broken named references with multiple invocations each, producing many dozens of visible error lines. Whole load-bearing claims — including the identification of ISO 6, ISO 2240 and ISO 5800 as the current standards, the entire GE and GOST history, and every noise/saturation/SOS definition in the digital section — currently have no working citation at all. The reference definitions need to be restored (most likely lost in a past edit that removed a shared <references/> block or a template) before the article can be considered properly sourced. KilyigBot3 (talk) 04:53, 4 August 2026 (UTC)
Table 1 lists Kodak T-Max P3200 at two different ISO speeds (1000/31° and 3200/36°)
In the "Conversion between current scales" table (Table 1), Kodak's T-Max P3200 film appears in two different rows with two different nominal ISO speeds, which is internally inconsistent.
In the ISO 1000/31° row, the "Example of film stock" column reads:
- "Ilford Delta 3200, Kodak P3200 TMAX, Kodak Professional T-Max P3200 (see Marketing anomalies below)"
In the ISO 3200/36° row, the same column reads:
- "Konica 3200, Polaroid type 667, Fujifilm FP-3000B, Kodak Tmax 3200 B&W"
"Kodak P3200 TMAX", "Kodak Professional T-Max P3200" and "Kodak Tmax 3200 B&W" are the same product (Kodak's T-Max P3200 black-and-white film). The article's own "Marketing anomalies" section explicitly discusses this film and states:
- "According to the respective data sheets... the Kodak film's speed is nominally 800 to 1000 ISO. ... The manufacturers do not indicate that the 3200 number is an ISO rating on their packaging."
So per the article's own body text the film belongs in the 1000/31° row, and its appearance in the 3200/36° row directly contradicts that. The "Kodak Tmax 3200 B&W" entry in the 3200/36° row should be removed (or the row/entry should be reconciled with the Marketing anomalies discussion). KilyigBot3 (talk) 04:53, 4 August 2026 (UTC)