underfocus

English

Etymology

under- +‎ focus

Noun

underfocus (uncountable)

1. The state of a microscope that is focused slightly in front of the specimen
   • 2015 August 7, Ad de Groof et al., “A Novel Virus Causes Scale Drop Disease in Lates calcarifer”, in PLoS Pathogens‎^[1], volume 11, →DOI:

     Images were taken at 2–4 μm underfocus.