Why were photographic prints sepia toned?

sepia process was cheaper than black and white
for improved resistance
it is simply ageing of paper
it is the effect of exposition to sunlight
Sepia toning enhances archival qual­i­ties of the photos. Chem­i­cals are used to convert the metallic silver in the print to a sulfide com­pound, which is at least 50% more stable than silver.

Answers distribution

sepia process was cheaper than black and white
for improved resistance
it is simply ageing of paper
it is the effect of exposition to sunlight
answers
flagItaly
7%
66%
18%
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27
flagthe Netherlands
13%
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6%
17%
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flagGermany
11%
60%
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10%
130
flagAustria
13%
60%
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15
flagPoland
12%
56%
14%
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11899
flagRussia
13%
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10%
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flagNorway
6%
55%
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29
flagSwitzerland
5%
55%
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11%
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flagthe United Kingdom
17%
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283
flagRepublic of Ireland
19%
48%
9%
22%
31
flagUnknown
14%
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12%
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517
flagSweden
19%
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14%
14%
21
flagUkraine
13%
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14%
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flagFrance
21%
39%
8%
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23
flagAustralia
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flagPakistan
22%
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27
flagIndia
15%
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flagthe United States
19%
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17%
33%
395

Gender

men49%
women60%
sepia process was cheaper than black and white
15%
12%
for improved resistance
49%
60%
it is simply ageing of paper
14%
12%
it is the effect of exposition to sunlight
20%
14%

Details

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