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Re: [OM] OM-D EM-5 review at dpreview

Subject: Re: [OM] OM-D EM-5 review at dpreview
From: Nathan Wajsman <photo@xxxxxxxxxxxxxx>
Date: Thu, 3 May 2012 20:58:35 +0200
The market for $800 lens adapters is perhaps 10 people.

Nathan Wajsman
Alicante, Spain
http://www.frozenlight.eu
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YNWA



On May 3, 2012, at 8:55 PM, Ken Norton wrote:

>> But a 0.5X converter would shrink the image circle and bring in poorly
>> corrected areas from outside the normal circle as well as likely adding
>> significant vignetting.
> 
> Intended purpose would be for legacy 35mm lenses which have the larger
> imaging circle.
> 
> Kodak has almost all of the key patents on this technology and was
> intentionally designed to allow the Four-Thirds sensor to use the 35mm
> format lenses as intended. I can only assume that Olympus did not and
> has not implemented this technology has everything to do with
> protecting the sales of new lenses. In fact, in one of the patent
> filings, you can see how Four-Thirds was the intended subject for this
> technology from the very beginning.
> 
> What is significant about the Kodak patents, as opposed to the others,
> is that Kodak addressed the focus shift issue. However, when combined
> with the short flange of Micro Four-Thirds, that's not even an issue.
> 
> It may be that the main reason why the adaptor was never produced for
> Four-Thirds was the incredibly long flange-to-sensor distance. As this
> is not a problem with Micro Four-Thirds, I was hoping that the adaptor
> would come out with the OM-D.
> 
> This is no secret, a deep military secret as to how to build one of
> these adaptors. Olympus could even charge a massive chunk of change
> and still sell bunches of them. Olympus also has some of the world's
> top most optical engineers, so I don't buy it that it's too difficult.
> Given the price of the EM-5, adding another $800 USD for the adaptor
> still would be less expensive than a used 5DMk2.
> 
> Kodak could definitely use the licensing income.
> 
> AG
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