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Councillor Anderson, handheld at full zoom



 
 
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  #1  
Old June 10th 10, 12:41 AM posted to rec.photo.digital.point+shoot,rec.photo.digital
Dudley Hanks[_4_]
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Posts: 1,282
Default Councillor Anderson, handheld at full zoom

http://www.blind-apertures.ca/Latest...orAnderson.jpg (full size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg (fast
loading)

Visited City Hall this morning and brought along the SX120 in order to see
how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really interested in
how the barrel distortion appears, ditto for purple fringing...

Appreciate anything you can tell me.

Take Care,
Dudley


  #2  
Old June 10th 10, 08:32 AM posted to rec.photo.digital.point+shoot,rec.photo.digital
Bob Williams
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Posts: 451
Default Councillor Anderson, handheld at full zoom

Dudley Hanks wrote:
http://www.blind-apertures.ca/Latest...orAnderson.jpg (full size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg (fast
loading)

Visited City Hall this morning and brought along the SX120 in order to see
how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really interested in
how the barrel distortion appears, ditto for purple fringing...

Appreciate anything you can tell me.

Take Care,
Dudley


Actually ....Not Bad......Not bad at all for indoor lighting, and hand
held at FL=360mm (eq.)
Bob Williams
  #3  
Old June 10th 10, 09:40 AM posted to rec.photo.digital.point+shoot,rec.photo.digital
bugbear
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Posts: 1,258
Default Councillor Anderson, handheld at full zoom

Bob Williams wrote:
Dudley Hanks wrote:
http://www.blind-apertures.ca/Latest...orAnderson.jpg (full
size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg
(fast loading)

Visited City Hall this morning and brought along the SX120 in order to
see how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really
interested in how the barrel distortion appears, ditto for purple
fringing...

Appreciate anything you can tell me.

Take Care,
Dudley


Actually ....Not Bad......Not bad at all for indoor lighting, and hand
held at FL=360mm (eq.)


Well, the camera's full name is SX120-IS, and the IS
may help ;-)

I was certainly (initially) astonished
by what my little Canon A590IS could do in this regard,
compared to my previous Canon A630.

BugBear
  #4  
Old June 10th 10, 10:38 AM posted to rec.photo.digital,rec.photo.digital.point+shoot
Pete[_8_]
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Posts: 258
Default Councillor Anderson, handheld at full zoom

On 2010-06-10 00:41:44 +0100, Dudley Hanks said:

http://www.blind-apertures.ca/Latest...orAnderson.jpg (full size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg
(fast loading)

Visited City Hall this morning and brought along the SX120 in order to
see how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really interested
in how the barrel distortion appears, ditto for purple fringing...

Appreciate anything you can tell me.


Commenting only on the small image, because its about the same size as
a print, it's as good or better than would appear in my local newspaper.

No distortion or fringing noticeable. It's more than sharp enough for
its purpose. Some colour noise in places, but not too distracting and
could be reduced in an editor if necessary.

Great shot, Dudley.

--
Pete

  #5  
Old June 10th 10, 10:48 AM posted to rec.photo.digital.point+shoot,rec.photo.digital
bugbear
external usenet poster
 
Posts: 1,258
Default Councillor Anderson, handheld at full zoom

Dudley Hanks wrote:
http://www.blind-apertures.ca/Latest...orAnderson.jpg (full size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg (fast
loading)

Visited City Hall this morning and brought along the SX120 in order to see
how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really interested in
how the barrel distortion appears, ditto for purple fringing...

Appreciate anything you can tell me.


Barrel distortion can be trivially post corrected.

BugBear
  #6  
Old June 10th 10, 12:43 PM posted to rec.photo.digital.point+shoot,rec.photo.digital
Peter[_7_]
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Posts: 2,078
Default Councillor Anderson, handheld at full zoom

"bugbear" wrote in message
...
Dudley Hanks wrote:
http://www.blind-apertures.ca/Latest...orAnderson.jpg (full
size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg
(fast loading)

Visited City Hall this morning and brought along the SX120 in order to
see how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really interested
in how the barrel distortion appears, ditto for purple fringing...

Appreciate anything you can tell me.


Barrel distortion can be trivially post corrected.



Is that barrel distorting, or a curved wall?

--
Peter

  #7  
Old June 10th 10, 01:20 PM posted to rec.photo.digital,rec.photo.digital.point+shoot
Pete[_8_]
external usenet poster
 
Posts: 258
Default Councillor Anderson, handheld at full zoom

On 2010-06-10 12:43:10 +0100, Peter said:

"bugbear" wrote in message
...
Dudley Hanks wrote:
http://www.blind-apertures.ca/Latest...orAnderson.jpg (full size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg
(fast loading)

Visited City Hall this morning and brought along the SX120 in order to
see how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really interested
in how the barrel distortion appears, ditto for purple fringing...

Appreciate anything you can tell me.


Barrel distortion can be trivially post corrected.



Is that barrel distorting, or a curved wall?


Distortion at full zoom is pincushion. Here it is offset by the curved
wall and is barely detectable towards the top left corner.

--
Pete

  #8  
Old June 10th 10, 01:27 PM posted to rec.photo.digital,rec.photo.digital.point+shoot
Peter[_7_]
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Posts: 2,078
Default Councillor Anderson, handheld at full zoom

"Pete" wrote in message
news:[email protected]
On 2010-06-10 12:43:10 +0100, Peter said:

"bugbear" wrote in message
...
Dudley Hanks wrote:
http://www.blind-apertures.ca/Latest...orAnderson.jpg (full
size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg
(fast loading)

Visited City Hall this morning and brought along the SX120 in order to
see how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really interested
in how the barrel distortion appears, ditto for purple fringing...

Appreciate anything you can tell me.

Barrel distortion can be trivially post corrected.



Is that barrel distorting, or a curved wall?


Distortion at full zoom is pincushion.


true

Here it is offset by the curved wall and is barely detectable towards the
top left corner.


I didn't notice the pincushion, but thought bugbear might have been
confusing the curved wall with barrel distortion.


--
Peter

  #9  
Old June 10th 10, 02:14 PM posted to rec.photo.digital.point+shoot
Pete[_8_]
external usenet poster
 
Posts: 258
Default Councillor Anderson, handheld at full zoom

On 2010-06-10 13:27:41 +0100, Peter said:

"Pete" wrote in message
news:[email protected]
On 2010-06-10 12:43:10 +0100, Peter said:

"bugbear" wrote in message
...
Dudley Hanks wrote:
http://www.blind-apertures.ca/Latest...orAnderson.jpg (full size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg
(fast loading)

Visited City Hall this morning and brought along the SX120 in order to
see how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really interested
in how the barrel distortion appears, ditto for purple fringing...

Appreciate anything you can tell me.

Barrel distortion can be trivially post corrected.



Is that barrel distorting, or a curved wall?


Distortion at full zoom is pincushion.


true

Here it is offset by the curved wall and is barely detectable towards
the top left corner.


I didn't notice the pincushion, but thought bugbear might have been
confusing the curved wall with barrel distortion.


Oops! The tone of my post wasn't meant to be corrective or pedantic.
Sorry to all.

The pincushion distortion is very slight. I confirmed it by rotating
the picture in an editor and checking along its grid lines.

I have to be overly sensitive to barrel/pincushion distortion in most
of my photography. Horizontal tilt correction is equally important and
causes me endless grief, especially when the vanishing point is outside
the frame.

--
Pete

  #10  
Old June 10th 10, 03:03 PM posted to rec.photo.digital.point+shoot,rec.photo.digital
George Kerby
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Posts: 4,798
Default Councillor Anderson, handheld at full zoom




On 6/9/10 6:41 PM, in article YEVPn.6492$z%[email protected], "Dudley Hanks"
wrote:

http://www.blind-apertures.ca/Latest...orAnderson.jpg (full size)

http://www.blind-apertures.ca/Latest...ersonSmall.jpg (fast
loading)

Visited City Hall this morning and brought along the SX120 in order to see
how it works at full zoom.

Took this pic from the back of the room, handheld at 1/100 sec (360mm).

I'm sure you will find a bit of camera shake, but I'm really interested in
how the barrel distortion appears, ditto for purple fringing...

Appreciate anything you can tell me.

Take Care,
Dudley


Dudley, it is very sharp. A noticeable amount of noise that is acceptable.
And I cannot see any C.A. In the marble wall edges. If you are testing for
lens distortion, I would suggest shooting a flat object like a fence line
head on. And barrel distortion usually occurs when the zoom is set to wide,
not telephoto. Overall, it appears that the camera does a nice job in your
hands.

 




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