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Sigma says in-lens stabilization compromises optical performance



 
 
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  #1  
Old March 20th 18, 03:48 PM posted to rec.photo.digital
android
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Posts: 3,854
Default Sigma says in-lens stabilization compromises optical performance

On 2018-03-20 09:42:25 +0000, RichA said:

And they'd be right. It has to. Shifting a lens or lens group
laterally obviously changes the correction of the system. One more
reason in-body is better.

https://www.dpreview.com/interviews/...-the-beginning


Any IS will... IBIS alters the optical system in camera and there is a
lag between motion in lense and sensor. Just as there is a lag in ILIS
of the same kind. And both system compromises the optical path...
--
teleportation kills

  #2  
Old March 20th 18, 04:21 PM posted to rec.photo.digital
Savageduck[_3_]
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Posts: 16,487
Default Sigma says in-lens stabilization compromises optical performance

On Mar 20, 2018, android wrote
(in article ):

On 2018-03-20 09:42:25 +0000, RichA said:

And they'd be right. It has to. Shifting a lens or lens group
laterally obviously changes the correction of the system. One more
reason in-body is better.

https://www.dpreview.com/interviews/...-this-is-just-
the-beginning


Any IS will... IBIS alters the optical system in camera and there is a
lag between motion in lense and sensor. Just as there is a lag in ILIS
of the same kind. And both system compromises the optical path...


....and neither IBIS, nor ILIS do a darn thing when it comes to subject
movement. There is where fast glass, and a camera with a capable sensor are
able to make those captures.

--

Regards,
Savageduck

  #3  
Old March 20th 18, 06:09 PM posted to rec.photo.digital
android
external usenet poster
 
Posts: 3,854
Default Sigma says in-lens stabilization compromises optical performance

On 2018-03-20 15:21:00 +0000, Savageduck said:

On Mar 20, 2018, android wrote
(in article ):

On 2018-03-20 09:42:25 +0000, RichA said:

And they'd be right. It has to. Shifting a lens or lens group
laterally obviously changes the correction of the system. One more
reason in-body is better.

https://www.dpreview.com/interviews/...-this-is-just-
the-beginning


Any IS will... IBIS alters the optical system in camera and there is a
lag between motion in lense and sensor. Just as there is a lag in ILIS
of the same kind. And both system compromises the optical path...


...and neither IBIS, nor ILIS do a darn thing when it comes to subject
movement. There is where fast glass, and a camera with a capable sensor are
able to make those captures.


Youp! If you have steady hands you don't rarely need IS with WA. 1/125s
is plenty for most subjects. Older and other photogs slightly
challenged in keeping their gear steady handheld can still benefit of
WA IS though.
--
teleportation kills

 




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