Ken Rockwell also points out that image stabilization is problematic with
ultrawides, since it is impossible to do from center to edge.
Consider the source.
----- Original Message -----
From: "Wayne Shumaker" <om3ti@xxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Thursday, January 3, 2019 8:52:54 PM
Subject: Re: [OM] ultra wide ?
At 1/3/2019 06:10 PM, Jan wrote:
>> From: Wayne Shumaker <om3ti@xxxxxxxx>
>>
>> Ken Rockwell also points out that image stabilization is problematic with
>> ultrawides, since it is impossible to do from center to edge.
>
>I don't know how he comes up with that.
>
>IBIS on my M.Zuiko 7-14mm Æ’/2.8 works great with the OM-D E-M1.2, into the
>multi-second realm, at least. That lens works great on video, too!
>
>Whatever it might be that is "problematic" seems to be something Olympus has
>solved.
Ken Rockwell claims that you would have to have a "rubber" sensor for IBIS to
work in the corners of an ultrawide. Optical stabilization I assume does not
have the issue.
I am assuming that with ultra wide lenses, the effort put into making them
rectilinear means motion at the edge versus the center varies. Perhaps a
fisheye would not have the problem. This is what he says, quoted from his
review of the 11-24 /4 Sony lens:
"The gotcha with this scheme is that while it works fine with longer lenses and
works great for stabilizing the center of an ultrawide image, the physics are
such that sensor-shifting can't correct the edges at the same time for
ultrawide images because the edges move at different rates. To correct an
ultrawide image for camera shake we need more shift at the edges than at the
center, and to do that would require a rubber sensor."
Anyway, he has pictures to back up his claim.
https://kenrockwell.com/sony/lenses/12-24mm.htm
scroll 2/3rds down to Image Stabilization.
WayneS
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|