I noticed a while ago that I can see the grease in my Pheonix 100mm macro
lens. I bought it new about 6 months ago. At first I was concerned but so
far the grease has stayed where it should, so I don't really worry about it
much anymore.
Todd
At 11:50 AM 3/24/01 -0800, you wrote:
>I just received an A 50mm f/2.8 Macro lens "in pristine, like new
>condition", according the eBay seller. I have a question regarding the
>proper extent of lubrication for the focusing helicoid.
>
>The lens arrived in something less than the advertised condition, with a
>light grease smeared on the rear element. I've never used a macro lens
>before, and the ability to peek inside and see the helicoid lubrication
>raised a question: What's it _supposed_ to look like in there? How much
>grease should there be on the helicoid? Does it evaporate to coat the
>glass surfaces over the years, or does the condition of the rear element
>suggest that the "pristine, like new" lens was given (too large) a
>dollop of grease just before I purchased it?
>
>Thanks for any input.
>
>Brian Walsh
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