It does rotate a little, thanks!

DagT

Den 13. des. 2006 kl. 09.42 skrev David Savage:

> For those who don't frequent DPR, this is an interesting video of the
> K100D's SR ina action:
>
> <http://pixinfo.com/img/Pentax/K100D/a/CCD_shift.mpg >
>
> Dave
>
> On 12/13/06, Digital Image Studio <[EMAIL PROTECTED]> wrote:
>> On 13/12/06, DagT <[EMAIL PROTECTED]> wrote:
>>>> Fra: "Digital Image Studio" <[EMAIL PROTECTED]>
>>>>
>>>> On 12/12/06, DagT <[EMAIL PROTECTED]> wrote:
>>>>
>>>>> If you have three sensors, and they have, the difference  
>>>>> between two sensors with the same orientation but positioned on  
>>>>> opposite sides of the frame they will be able to measure  
>>>>> rotation.  It is not very clear from the document, but at least  
>>>>> it is possible and I know this has been mentioned other places  
>>>>> as well.
>>>>
>>>> It actually says:
>>>>
>>>> "Based on a free-floating sensor design, PENTAX SR is superior to
>>>> other sensor-moving systems because it uses no guide rails,  
>>>> allowing
>>>> the sensor to oscillate in three directions?horizontally,  
>>>> vertically,
>>>> and rotationally."
>>>>
>>>> But in this later document which includes references to the K10D:
>>>>
>>>> http://www.pentaxslr.com/files/scms_docs// 
>>>> PENTAX_SR_Description_091506.pdf
>>>>
>>>> "Based on a free-floating sensor design, PENTAX SR is superior to
>>>> other sensor-moving systems because it uses no guide rails,  
>>>> allowing
>>>> the sensor to oscillate in three directions?horizontally,  
>>>> vertically,
>>>> and diagonally."
>>>>
>>>> So it's clear as mud.
>>>
>>> Have you tried to explain rotation as a third dimension to  
>>> marketing people .-)
>>>
>>> That may explain some of the confusion. To me it makes more sense  
>>> than the third direction is a rotation than just a diagonal  
>>> translation. The latter would be possible with the right design  
>>> of guide rails, but not the rotation.
>>
>> I suspect that rotation and any other combination of parallel or
>> diagonal movement would be possible using the combination of four
>> motors that they have. The motors are the guide rails :-)


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