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12-02-2018, 11:59 PM   #31
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The Takumar bayonet lenses are coated but not multi-coated. Multi-coating is not just adding more coatings. Each layer of coating has to be a particular thickness to be effective. It is unlikely that whoever you send the lens off to will know the thickness of the existing coatings to do the job properly. Also, original SMC is 7 layers. Having two random thickness layers probably won't get close.

12-03-2018, 08:02 AM   #32
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QuoteOriginally posted by pentaxus Quote
The Takumar bayonet lenses are coated but not multi-coated. Multi-coating is not just adding more coatings. Each layer of coating has to be a particular thickness to be effective. It is unlikely that whoever you send the lens off to will know the thickness of the existing coatings to do the job properly. Also, original SMC is 7 layers. Having two random thickness layers probably won't get close.
Yep ^ ^ ^

The OP has already admitted that they were not actually interested in having the procedure done (postage would be too high) and it is obvious too that doing so would not make much sense. Why would someone spend several hundred dollars to re-coat a not uncommon $25 lens in the hopes that it might perform as well as a not uncommon $35 lens?


Steve
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