Bowser <> writes:
> On Thu, 22 Mar 2012 09:24:25 -0500, David Dyer-Bennet <dd->
> wrote:
>
>>"David J Taylor" <david-> writes:
>>
>>> "Bruce" <> wrote in message
>>> news:...
>>>> ... and gain market share in Europe and the USA.
>>>>
>>>> Figures for the whole of 2011 showed mirrorless cameras gaining 42% of
>>>> the Japanese market for interchangeable-lens cameras with DSLRs taking
>>>> 58%. Meanwhile, in Europe, mirrorless took 17% (although the UK
>>>> market share was significantly higher) and in N America, only 13%.
>>>>
>>>> Interim figures for the first two months of 2012 show that, in Japan,
>>>> sales of mirrorless cameras have breached the 50% barrier and are
>>>> outselling DSLRs for the first time. Mirrorless market share has also
>>>> exceeded 30% in the UK and 20% in the USA.
>>>>
>>>> <http://www.43rumors.com/new-pene-5-firmware-update-and-ukjapan-shares-unveiled/>
>>>> <http://www.techradar.com/news/photography-video-capture/cameras/compact-system-cameras-have-30-share-in-uk-1064770>
>>>
>>> I remain disappointed that Nikon don't have an offering in this range
>>> which takes their existing lenses without adapters, but perhaps there
>>> wouldn't be a great reduction in size?
>>
>>The flange distance, the distance from the back of the lens to the
>>sensor/film, is a key lens mount design feature. To use F-mount lenses,
>>you need to hold them at the right distance from the sensor. Either the
>>body has to be that thick itself, or there has to be an adapter in
>>between.
>>
>>I'd suggest that the goal should not be "no adapter", but rather "fully
>>functional" -- all auto-focus and auto-exposure features should work.
>>At that point, is the adapter actually a significant problem?
>
> No, but glacial AF would be a big problem. Nobody has successfully
> created a mirrorless camera that can use legacy lenses with fast CDAF.
The Nikon 1 is allegedly very fast, according to people who have them.
> I know then can jury-rig some sort of PDAF system, but why? The m4/3
> cams have very fast CDAF.
I suppose you can say they do, but onlyh in the sense that it's fast
"contrast-detection autofocus". The focus on my EPL-2 is *glacial*
compared to focus on my D700. (And some are allegedly considerably
faster than my EPL-2; however, as I read reports, they're competitive
with entry-level DSLRs, NOT competitive with prosumer or full-bore pro
equipment.
> There is no need to micro-adjust since the AF comes right off the
> sensor, and the AF system can be made very flexible.
Yes, that's very handy. I now make sure to do all lens-testing focus
that way for example.
> Designing a mirrorless system that's crippled because they want to use
> a legacy lens line doesn't make sense.
Hard to say; a lot of the value of the Nikon system is the legacy lens
line.
--
David Dyer-Bennet,
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