The 'ghosting' looks like what's sometimes called veiling flare - the
misty look that affects the whole image and is well known to
rangefinder users with old Leica lenses. Seems to be caused by light
partially reflecting back and forth from the element surfaces and
interfaces. Stopping down reduces the problem. Using a 50/1.4 as a
portrait lens, it might almost be an advantage.
It's long been argued that the cheaper, slower OM Zuikos do better on
four thirds than the classic, fast, lust objects - thus the slower
21mm or 24mm. Good news for the pocket. Once again, the 200mm f4 or 5
gets a positive mention.
Andrew Fildes
afildes@xxxxxxxxxxxxx
On 28/12/2009, at 8:35 AM, usher99@xxxxxxx wrote:
> 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.
>
>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|