Michael,
CA will sure hurt resolution, it is shift of one or more color, any shift of
color will reduce MTF reading. Of course it depends on how serious the CA
is.
I belive you have stopped down for flower shots and I don't belive you will
shoot landscape wide open, serious landscape and macro require tripod
espeically with a 180mm long lens.
I don't think my 3000dpi scanned full size sample is soft (no sharpen
applied, scanned with 4000ED)
http://www.accura.com.hk/180-T/180-06.jpg 3.3MB shot at F4.
Here is a shot I just made with E-3 and OM 180 wide open.
http://www.accura.com.hk/180-T/P3093458.jpg
Remeber it is equivalent to 40MP digital back cropped. I doubt you will see
obvious different in resolution compare the OM and N*kon on film. An image
is sharp or not, the human factor is more important in real life.
BTW, sharpness is not everything, your flowers looks burnt, I belive you
need some fresh one :-)
http://www.accura.com.hk/180-T/FL08.htm
C.H.Ling
----- Original Message -----
From: "Michael Wong" <mialop.wong@xxxxxxxxx>
>
> Hi, Dave,
> Thanks for your comment.
>
> As my memory, Zuiko 180.2.8 with high resolution but contrast is a bit
> lower. The image is a bit soft at wide open. I do recognize it's a good
> lens
> for portrait but it's *not* enough good for landscape or plant shots. I
> wouldn't
> say Zuiko 180/2.8 is not a good lens but as my photography hobby, most of
> landscape & plant shots. I'd think Nikkor one is more suitable for me.
>
> As my knowledge, ED glass is going to improve CA problem, right? I don't
> think it will be more sharper if ED glass is applied.
>
>
> --
> Michael
>
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