Old but better lens

Some influence by weather pressure layout brought to Kansai area relatively warm temperature this morning, the end of this year, but a bit rainy outside.
I have succeeded in surviving Minolta W.ROKKOR-SG 28/3,5, an old lens as it had been tens years ago, fully metallic constructive design shows that it would be continued indefinitely if the adequate and sufficient maintenance would be performed. The physical performance might be inferior to recent computer analyzed designed ones, 40 years old has some capability to resolve a scenery with specific character, I can ignore vignetting and circle end peg shape distortions. To tell the truth, I had obtained this one from YaHoo Auction at giving away price, 300 yen! Just because of mold formation at iris portion and heavy focusing ring movement,  I knew this 28/3,5 had not been used from the beginning and left untouched as long as 40 years, no wear of straight ahead helicoid guide and the iris ring's clicking movement with moderation, clean and transparent lettering imply the truth. As for critical problem caused by mold breeding inside of lens element, disassembling in pieces and cleaning procedures solved the problems thoroughly like nothing happened in the passed without leaving any scars on coating surfaces.
Denatured and hardened helicoid grease was removed and applied #70 gear oil there instead, re-obtaining desirably smooth movement was reproduced like a new lens. Lens speed 3,5 is not always a good advantage to use it on the see through the lens system with reflecting mirror, because there is some difficulty to find out focused pin point in some darker shooting condition, so this one would not be modified adopting connection by changing bayonet mount keeping Minolta SLR MC and MD mount. I have already obtained 42 PRAKTICA mount EBC Fujinon 28/3,5 as an alternative using by way of 42-EOS adapter. Consequently, SG 28/3.5 lens would be kept as my favorite one so long.