Originally posted by p38arover And railway stations became train stations.
When did train depots become railway stations?
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The term "depth of field" as a couple of people have suggested calls for the range of this characteristic to be described in terms of deepness or shallowness -- in order to be consistent with the metaphor.
To speak of what is in focus as "thin" implies a different metaphor, filled out better by the poster who spoke of what was in focus being only a "thin slice" of the subject matter.
Calling DEPTH of field THIN mixes the metaphors and is bound to irk or unsettle some people.
It doesn't bother me. I would prefer to be irked when people say "less" when they should be saying "fewer."