| Author | Message | ||
     Glenn Tinkerer Username: Glenn Post Number: 782 Registered: 07-2006 Rating: N/A |
On the point of what the Manufactures used - One can search the original spec sheets, but this is somewhat pointless as it often proves impossible to trace equivalents back to present day availability. In the case of some manufactures, ie Canon, you will find that they used very specific mixes of various grades/types of grease on most of their lens helicals. Even if you find modern equivalents, the stated mix ratios do not work when applied to modern products. Not really surprising - as the actual physical properties are usually only broadly comparable when you actually really get down to the old and new specs. |