I don't think this "ghosting" is only happen with digital. All large
aperture Zuiko (85mm and below) is a little soft wide open, it is caused by
the lens aberration not reflections. If it is caused by reflections that
bounce between the rear element and the sensor it should happen at all
apertures.
Looking at this 50/1.4 shot the image is soft wide open but with a small
adjustment the image is very usable. The same softness happen to the
test images I made with negatives many years ago.
E-3 original shot, sharpness -2, OM 50/1.4 at F1.4
http://www.accura.com.hk/temp/50mmF14.jpg
Slight contrast curve + slight LCE
http://www.accura.com.hk/temp/50mmF14a.jpg
This is a shot at F2.8 where most lens aberration is corrected:
http://www.accura.com.hk/temp/50mmF28.jpg (no post adjustment)
C.H.Ling
----- Original Message -----
From: <usher99@xxxxxxx>
To: <olympus@xxxxxxxxxxxxxxxxx>
Sent: Monday, December 28, 2009 5:35 AM
Subject: Re: [OM] Olympus E-P1 + Zuiko 40 F2
> Thanks for the link. I was surprised by all the "ghosting even with
> the Z. 50/1.4." This appears to be mediated by reflections off the
> rear element. I don't really understand why there is so much
> difference on MFT. Any ideas? He mentions registration distance as a
> factor but with the proper adapter the distance from the rear element
> to the sensor/film is the same of course. With the OM 5D classic or
> Mk11 IIRC, the Tam 90/2.8 macro had an issue but very few other lenses.
> I hope the Zuiko macros work well on MFT.
>
> Mike
>
>
> On 25/12/2009, at 12:15 AM, David Irisarri Vila wrote:
>
>> Anyone interested can find all OM lenses attached to E-P1 here:
>>
>> http://www.biofos.com/cornucop/omz_ep1.html
>>
>> There is also OM 40/2.
--
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