Perhaps the next version will be water cooled. :-)
Chuck Norcutt
Tim Hughes wrote:
> Reading through the specs for the Sony FF cameras they mention that
> the signal processing is done at two levels, analog preprocessing on
> sensor chip, along with normal digital processing. But not only is
> there on chip preprocessing, they do the A/D conversion on sensor
> chip, along with some digital processing.
>
> It is not clear how the processing,control logic and DSP is parsed
> out, but just doing the A/D conversion, gain setting,black level,RGB
> channel ofsetting etc. is likely quite a lot of extra silicon along
> with potential heat generation, which contributes to dark current
> noise. Quite gutsy with such a large imaging chip to make it even
> bigger. One upside is data rates must be very high with 24Mpixels,
> so may be a good thing not having to take signals off chip before A/D
> conversion. Downside is potential extra digital noise coupling into
> sensor.
>
> Tim Hughes
>
>
>
> --- On Tue, 10/6/09, usher99@xxxxxxx <usher99@xxxxxxx> wrote:
>
>
> From: usher99@xxxxxxx <usher99@xxxxxxx> Subject: [OM] OM to Sony
> alpha adapter-- f/u To: olympus@xxxxxxxxxxxxxxxxx Date: Tuesday,
> October 6, 2009, 9:43 AM
>
>
> Hi Iwert, I see what you mean regarding the orange ring. I don't
> have the testosterone to perform potentially irreversible camera
> mount phlange surgery to create FF digital film given the price of
> these things nice as though it would be at base ISO. Being able to
> use some of that nice Zeiss glass is another attraction of a
> non-destructive adapter. The alphas really aren't that much less than
> a Canyon 5D11 with live view that can work fine as digital film for
> Zuikos. Mike
>
>
> http://a.img-dpreview.com/news/0908/Sony_alpha/A850/DSLR-A850_front.jpg
>
>
>
>
>
> Mike,
>
> would it be possible to take the alpha mount out and replace it with
> an OM-mount? (that would do away with the horrid orange ring as well
> :). It should just be 6 screws? I suppose that sticking out lever can
> be hidden inside the extra thickness of the OM-moun? YouI wouldn't
> use AF glass anyway... would you?
>
> Iwert
>
> 2009/10/5 <usher99@xxxxxxx>:
>> Bah, As promised, I pinged my favorite oddball adapter fabricator:
>> Technical advisor at Srb Griturn took another look. As Tim
>> observed, the diameters of the OM and Alpha bayonets are almost
>> identical and no easy way to have OM lens turn in the alpha throat
>> turn and be able construct a latch/stopdown mechanism. Srb
>> doesn't think it is a viable option. Would take some fancy
>> engineering if it is even possible at all w/o mucking up the Sony.
>>
>>
>> Mike --
>
>
--
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