{TAIL ~ The relay lens system} comprises a plurality of relay lens units at least one of which allows longitudinal chromatic aberration to remain in an undercorrected tendency and at least another of which allows longitudinal chromatic aberration to remain in {HEAD ~ an overcorrected tendency}, thereby correcting longitudinal chromatic aberration favorably in the relay lens system as a whole 
{ TAIL ~ The relay lens system } comprises a plurality of relay lens units at least one of which allows longitudinal chromatic aberration to remain in an undercorrected tendency and at least another of which allows longitudinal chromatic aberration to remain in { HEAD ~ an overcorrected tendency } , thereby correcting longitudinal chromatic aberration favorably in the relay lens system as a whole
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