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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
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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
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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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