"Trevor" <> wrote:
>"Bruce" <> wrote in message
>news:.. .
>>>What makes this an "OM enthusiasts prayers answered" more so than any
>>>previous E series SLR (other than the OM-D name)?
>>
>> The OM-D looks like an Olympus OM, just as the PEN E-P1, 2 and 3 look
>> like an Olympus Pen F or FT. Yes, it is all about appearances, and
>> about exploiting the enormous positive sentiment for the OM System.
>>
>> I am very happy to be exploited and I think many OM enthusiasts will
>> too. I have no doubt that the OM-D E-M5 will sell very well indeed. I
>> expect I will buy one at some point, just not immediately.
>
>As a long time OM enthusiast I can say it will take more than a retro look
>for me to buy one. My Canon DSLR's take my OM lenses with adapters just the
>same as the E-series or OM-D will.
>Now if it had an OM mount with aperture automation, it might "answer some of
>my prayers", but it doesn't.
Then your prayers are slightly different, Trevor.
Many, if not most OM Zuiko lenses present significant problems when
used on a (Micro) Four Thirds digital sensor. The sensor design
strongly prefers telecentric lenses, where most of the light rays are
approximately perpendicular to the sensor when they hit.
But the OM Zuiko lenses were designed primarily for compactness and
light weight - small and light was the USP of the OM System - and this
coincidentally tended to produce lenses that were far from
telecentric. That didn't matter with film, which can record light
rays from all angles; all that mattered was where they hit the film,
not at what angle. But with a digital sensor, light rays striking at
oblique angles generate a much lower response from the receptors.
The result is that many OM lenses are poor performers on digital
sensors, particularly on the small (Micro) Four Thirds sensor. They
suffer particularly from vignetting and their overall performance is
degraded compared to their performance on film.
Olympus helpfully released a list of OM lenses with indications as to
which would performed well, or less well, with suggested limitations
on some in terms of lens apertures. I was so put off by the
complexity of this list, and the dire warnings it contained, that I
never even tried an OM Zuiko lens on my E-1 bodies. There was no need
because I no longer owned any OM gear and the Zuiko Digital lenses
were in any case superb.
So the OM-D E-M5 is not intended as a digital body for use with OM
lenses. It is more about retro styling that taps into the positive
sentiment for the OM system that is still around. People will buy it
because it looks like an OM SLR, not because it accepts OM lenses.
I accept that some people won't like it. But that's true of every
other product on the market.