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Tribute to an oldie, a cheapie,a simpleton, but a goodie!
#7
Quote:well, I guess the weight from that link is just wrong. Smile

Probably your lens is pretty similar to the earlier 50mm f4 designs, so it would be like this:

[Image: Super-Multi-Coated_MACRO-TAKUMAR_50_4_optics.jpg]

http://www.pentaxforums.com/lensreviews/...-Lens.html
 

Seems like a typo.  Boz Dimitrov's page is probably a better resource for older K-mount lenses:

http://kmp.bdimitrov.de/lenses/primes/no...Macro.html

 

...he usually includes optical formula diagrammes too:

http://kmp.bdimitrov.de/lenses/primes/_o...-Macro.gif
  


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Tribute to an oldie, a cheapie,a simpleton, but a goodie! - by dave9t5 - 01-22-2014, 12:41 AM

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