blue bubble: 20151205-DSC03217_Tokyo Kogaku UV Topcor 53mm f2
blue bubble: 20151206-DSC03225_Tokyo Kogaku UV Topcor 53mm f2
blue bubble: 20151206-DSC03228_Tokyo Kogaku UV Topcor 53mm f2
blue bubble: Tokyo Kogaku UV Topcor 53mm f2 modified to m42