<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">collodion processes</topic></authority><related type="narrower"><topic>wet collodion process</topic></related><related type="narrower"><topic>dry collodion process</topic></related><related type="other"><topic>collodion</topic></related><related type="broader"><topic>photographic processes</topic></related><variant type="other"><topic>collodian process</topic></variant><variant type="other"><topic>collodion process</topic></variant><variant type="other"><topic>processes, collodion</topic></variant> <note xml:lang="en"><![CDATA[ Photographic processes in which collodion is the binder. A silver halide is the light-sensitive agent, and the process may be used to produce positives (ambrotypes, tintypes) or negatives. ]]></note></mads>