ricoh 50,sigma 28-70 design diagrams and influence

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One of a apug members donated me below listed camera lenses.

ricoh 50 mm f 2 auto sears
sigma 28-70 f 3.5-4.5

do you know their design influence ? leica , zeiss or where ?

can you post their diagrams ?

best ,

mustafa umut sarac
 
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