That's a good reason to use Canon lenses of f2.8 or faster.
Andrew Fildes
afildes@xxxxxxxxxxxxx
On 05/10/2010, at 9:23 AM, Chuck Norcutt wrote:
> This is how Canon autofocus works
> <http://www.fredmiranda.com/forum/topic/241524>
> No guarantee that Oly works the same way but I'd bet it's similar.
>
> Chuck Norcutt
>
>
> On 10/4/2010 11:04 AM, jjohnso4@xxxxxxxxxxxxxx wrote:
>> Ian Nichols wrote:
>>
>>> How does this happen? surely it's a closed-loop system, i.e. focus
>>> sensor detects that image is out of focus and adjusts lens until it's
>>> in focus
>>
>> Hi Ian,
>>
>> The Canon AF systems are not closed loop and I doubt that Olympus is
>> different. I suspect that a closed loop system would degrade focus tracking
>> to an unacceptable level.
>>
>> Later,
>> Johnny
>> ------------------
>> Johnny Johnson
>> Cleveland, GA
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