Quoting Darren Addy <[email protected]>:
I believe you are seeing something that has always been possible with
that lens, but if you haven't seen it before now then you just haven't
been shooting it with the right combination of aperture, focal length,
and light condition. This is the famous center spot that is due to the
completely FLAT rear lens element. (Check your lens, I'll bet it is
completely flat). Then google it.
Hmmm...
OK. Thanks - I'll look into that. It does seem odd though, that I'm
just noticing it now. I've been using this lens for over 20 years
without seeing the problem previously. I almost always use it stopped
down to about f16 to maximise depth of field in wildflower
photography. I'll have to take a closer look at some of the photos
I've taken over the past few years to see if there's any sign.
--
Cheers
Brian
++++++++++++++++++++++++++++++++++
Brian Walters
Western Sydney Australia
http://lyons-ryan.org/southernlight/
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