Thanks for that. Yes, the A1 does have both a mechanical and electronic
shutter. I didn't understand why. Now I do.
Chuck Norcutt
Carlos J. Santisteban wrote:
> Hi Chuck and all,
>
> From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
>> I hadn't thought about the frame rate for an FP shutter and will agree
>> that you must be correct. So, what is the shutter? An on-chip
>> electronic unit ala Mynolta A1 and other P&S cameras? What does that
>> imply for future flash sync speeds in live-view mode?
>
> P&S cameras usually add a small leaf shutter -- I presume the A1 does the
> same.
>
> The idea of an "electronically shuttered" CCD (or CMOS) sensor is not news,
> videocameras have been doing that for "decades". But dynamic range
> decreases, and some flaws (like the vertical bands seen at very bright
> spots) become much more noticeable.
>
> I can see all of these flaws in the live view of my GF1, but they all
> disappear when reviewing (chimping time!) the taken picture. That's why the
> new micro-4/3 cameras need that weird shutter action: close (and reset the
> sensor) - open (and start integrating) - close after exposure (and transfer
> the image) - open again (to restore live view)
>
> Cheers,
--
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