Ken Durling wrote:
>
> Could I ask for a brief expalanation? I've heard so much about the
> 28-135 IS lens that I was trying one out in a store today. (very nice
> handling lens) I noticed that on the focusing ring at the .5 meter
> end it says "Macro," and that the focusing window also has a macro
> range. However, hte lens only focuses down to .5m/1.6f - not terribly
> "macro." What is meant by the term on this lens? I've nevber heard
> it referred to as a "macro" here. Also, this lens has the helical
> drive, not the ring, is that correct?
>
> Thanks
> Ken Durling
>
Macro, in this case, is a marketing term. It produces images slightly
better than 1/2 life size, so I guess that counts.
As far as helical vs. ring, I assume you are referring to USM type. It
is ring USM, its front element does not rotate, and it has full time
manual focusing. The 75-300 IS USM is the helical type, and its front
element does rotate. That seems to be the best way to tell which is
which. AFAIK, the 75-300 is the only non ring USM IS lens in the line.
I think the 28-135 is a great lens, I've gotten some great results from
it, and not just because of the IS.
Skip
--
Shadowcatcher Imagery
http://www.shadowcatcherimagery.com
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