The bright water spots was already highly overexposed. I'm very happy that
stop down the lens can lead to such improvement. Besides the chromatic
aberration the 180/2.8 is a great lens. I have some portraits shot that
people just thought they are come from medium format camera. The resolution
of this lens is also very high, excellent for landscape. Most of my other
shots didn't show this chromatic aberration even wide open, it only appeared
on the very bright area. Now I think stopping down the lens can virtually
eliminates this problem.
C.H.Ling
-----Original Message-----
From: David Irisarri Vila <valicors@xxxxxxxxxx>
To: olympus@xxxxxxxxxxxxxxx <olympus@xxxxxxxxxxxxxxx>
Date: Wednesday, September 13, 2000 4:07 AM
Subject: Re: [OM] Zuiko 180/2.8 Test with UV filter
>Good test C.H.Ling,
> I suspected that uv filter solution wouldn´t be so
>effective, but I can´t understand why if you stop down you
>can reduce this aberration. The best way to check this
>problem is to make the following test:
>http://www.dpreview.com/reviews/olympusc3030z/default.asp?page=13
>As you can see, this Olympus camera has also chromatic
>aberration like my CAMEDIA 2500L, and you should overexpose
>your photos 3 stops to see this purple frrrringiiing!!!
>
>Again, thank you for your help and photos
>
>Dave
>
>"C.H.Ling" wrote:
>>
>> I just tested out my 180/2.8 with a Hoya UV filter. Please see below for
the
>> results:
>>
>> http://www.glink.net.hk/~olympus/180TEST.htm
>>
>> seems that UV filter didn't solve the problem, but stop down the lens
>> improved a lot.
>>
>> C.H.Ling
>>
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