I am using ConTeXt LMTX 2020.08.31 22:16. Consider the following MWE:

  \starttext
  \externalfigure[resolutionTest.png]
  \stoptext

When comparing the output with ConTeXt MKIV, then the image size is extremely small. gimp reports the resolution of resolutionTest.png as 71.984 DPI. Is this a bug? (I cannot reproduce the shrinkage with hacker.png.)

Also, I noticed that the "resolution" key when applied as:

  \externalfigure[resolutionTest.png][resolution=150]

has no effect. What is the meaning of this key?

Cheers,

Christoph