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
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
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
Interesting, thanks for the link.
I've just been playing with my K10D a little, set on 15sec exposure with no
lens to see the sensor move.
On Dec 13, 2006, at 2:42, David Savage wrote:
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
I had to remove the trailing space from your link to get it to work -
but once I did that: That
So are you saying that the sensor moves vertically or horizontally, or
both, but remains parallel to the sensor?
John
On Mon, 11 Dec 2006 17:17:10 -, John Francis [EMAIL PROTECTED] wrote:
The SR is (mostly) done by a translation, not a rotation; that
has the same amount of travel for
Yes.
Dave
On 12/12/06, John Forbes [EMAIL PROTECTED] wrote:
So are you saying that the sensor moves vertically or horizontally, or
both, but remains parallel to the sensor?
John
On Mon, 11 Dec 2006 17:17:10 -, John Francis [EMAIL PROTECTED] wrote:
The SR is (mostly) done by a
Sensor parallel to the sensor?! Of course .-)
They say that they comspensate for a slight rotation in the sensor plane, but
my guess is that the laregest movement is the pure translation horisontally
and/or vertically.
DagT
Fra: John Forbes [EMAIL PROTECTED]
So are you saying that the
On 12/12/06, DagT [EMAIL PROTECTED] wrote:
Sensor parallel to the sensor?! Of course .-)
They say that they comspensate for a slight rotation in the sensor plane, but
my guess is that the laregest movement is the pure translation horisontally
and/or vertically.
It would be possible to
Fra: Digital Image Studio [EMAIL PROTECTED]
On 12/12/06, DagT [EMAIL PROTECTED] wrote:
Sensor parallel to the sensor?! Of course .-)
They say that they comspensate for a slight rotation in the sensor plane,
but my guess is that the laregest movement is the pure translation
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
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
Precisely.
(It can also rotate in the plane of the sensor, around the
axis of the lens, to correct for twisting the camera; this
is something that in-lens image stabilsation can't do. But
this is a much smaller contributor to camera shake; almost
all the corection consists of up/down/left/right
On Tue, 12 Dec 2006 18:28:36 +0100, John Francis [EMAIL PROTECTED] wrote:
Precisely.
(It can also rotate in the plane of the sensor, around the
axis of the lens, to correct for twisting the camera; this
is something that in-lens image stabilsation can't do. But
this is a much smaller
Many thanks for the clarification (and to Rob, Dag, and others).
John
On Tue, 12 Dec 2006 17:28:36 -, John Francis [EMAIL PROTECTED] wrote:
Precisely.
(It can also rotate in the plane of the sensor, around the
axis of the lens, to correct for twisting the camera; this
is something
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
MJ quotes Canon claiming that in-body SR is no good for long lenses,
because it would require the sensor to move by 1/4 of an inch.
They are talking of course about full frame 35mm. The required movement
would presumably be rather less on an APS-C sensor.
John
On Sun, 10 Dec 2006 23:04:31
John,
The movement required would be the same for say a 500mm lens independent of
sensor size - a point in the middle of the sensor would still move the same
distance with the same angular displacement of the camera/lens combination.
Still I am impressed with getting a fair proportion of my
On 11/12/06, Rod Connan [EMAIL PROTECTED] wrote:
The large movement available in the K10D sensor support plate is evidenced
by the clearly heard thunk when you tip the camera from side to side (when
the camera is off)
Scaling and measuring images of the SR mechanism I estimate the
clearance
Rod,
I think I'd have to disagree with this. For sure if you comapre like
focal lengths what you say is true, but it is surely better to comapre
like FOV, in which case the K10D has a 1.5x advantage over a full
frame moving sensor system.
Eric.
On 11/12/06, Rod Connan [EMAIL PROTECTED] wrote:
No, the amount of movement is the same for the same lens, but the smaller
sensor has more room to move before it gets outside the image circle.
DagT
Fra: John Forbes [EMAIL PROTECTED]
MJ quotes Canon claiming that in-body SR is no good for long lenses,
because it would require the
The sensor will move through the same angle for any given lens, but as the
APS-C sensor is smaller than a 35mm sensor, the distance travelled by the
edge that is furthest from the fulcrum will be shorter.
John
On Mon, 11 Dec 2006 11:00:23 -, Digital Image Studio
[EMAIL PROTECTED]
On 11/12/06, John Forbes [EMAIL PROTECTED] wrote:
The sensor will move through the same angle for any given lens, but as the
APS-C sensor is smaller than a 35mm sensor, the distance travelled by the
edge that is furthest from the fulcrum will be shorter.
Obviously the compensatory sensor
The SR is (mostly) done by a translation, not a rotation; that
has the same amount of travel for all the parts of the sensor
(and does not depend on sensor size). There is no fulcrum.
On Mon, Dec 11, 2006 at 11:54:28AM -, John Forbes wrote:
The sensor will move through the same angle for
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