If you really care, you might refer such folks to:
Review: Panasonic Lumix G X Vario PZ 14-42mm f/3.5-5.6, heading 'Shutter Speed
and Image Sharpness' about 2/3 down the
page. <http://www.wlcastleman.com/equip/reviews/pz14-42/index.htm>*
*
GX1 Shutter-Induced Decrease in Lens Performance
<http://www.wlcastleman.com/equip/reviews/pz14-42/shutter_lens.html>
http://cameraergonomics.blogspot.co.uk/p/analysis.html
The posts here listed under the heading 'Mirrorless Interchangeable lens
cameras Shutter Shock'
<http://cameraergonomics.blogspot.co.uk/p/analysis.html>
The examples of mechanical vs. electronic shutter are particularly persuasive.
The first one is the one that started it all, I believe, with the first careful
documentation of the problem. The image
'Blurred frame with double imaging' is similar to, although worse than, those
that first bothered me on the E-M5.
Again like my experience; "Image blurring appeared with all four M43 lenses in
the shutter speed range 1/20 second to
1/200 second, with the worst examples around 1/100 second. Mysteriously, most
but not all frames at the critical shutter
speeds were affected. Most severely affected were the longer lenses at their
longest focal length. "
Most disturbing; "These findings indicate that I cannot get reliably sharp
shots between 1/30 sec and 1/200 sec with the
Panasonic 100-300 mm or Olympus 75-300 mm lenses on the Panasonic GH2 body,
*/by any means at all/*."
Fortunately, as can be seen in one of the other links, the Olys in general and
E-M5 in particular aren't as bad as the
GH2 (and most other Pannys with mechanical shutter). And 1/8 second Anti-Shock
delay solves the problem, although
raising another for some subjects, as you have pointed out.
------------------------
There are others reviews/posts, but these are the ones I've noted, and they
have nice examples, explanations, MTF
charts, etc., so might be scientific enough.
Dpreview commented on it in the E-PL5 review, and on not running into SS
trouble in the E-M1 review. I'm personally not
convinced there has been any change on the E-M1 other than more mass in the
body and extensive use of the big, heavy M.Z
12-40/2.8 Pro lens in their testing. Add mass, and the effect goes down.
Mass Speculation Moose
On 12/21/2013 5:12 PM, Peter Klein wrote:
> A paean to the E-M1 on Steve Huff's site appeared this week, written by
> someone who had previously used the E-M5. So I asked him if he'd
> noticed any difference between the two cameras regarding shutter shock
> or EVF delay. He hadn't. No problem. Then some other well-meaning
> fellow wondered if it both issues weren't all a myth, FUD or user
> error. Or a rank beginner's lack of knowledge. I tried to answer him
> without being nasty, hope I succeeded.
>
> My first post is #39, see that and the three following.
> http://www.stevehuffphoto.com/2013/12/19/the-olympus-om-d-e-m1-vs-the-rest-of-the-industry-by-william-rappard/#comment-270457
>
> I mention this because I was just trying to get some information about
> whether the E-M1 was worth upgrading from the E-M5. But it appears that
> what concerns me is so esoteric that most people just go "Huh?," or use
> it as an opening to propound a pet theory, having never looked at the
> problem themselves.
>
> I've noted that a large body of people on photo blogs tend to dismiss
> anything that can't be proven "scientifically." And their standards are
> so high that nothing can ever be proven, leaving them the freedom to be
> always right. I remember the same thing happening when numerous people,
> myself included, found that "legacy" lenses didn't meter correctly on
> many DSLRs (including E-thingies) at very wide and very arrow apertures.
> "No, you must be doing something wrong," they said.
>
> Yeah, I know, it's the Internet.
>
> --Peter, who believes the bumblebee *can* fly, because, darn it, he's
> consistently seen it happen.
--
What if the Hokey Pokey *IS* what it's all about?
--
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