GH4 POWER OIS jitter issue

kb99 said:
My 12-35 definitely does not have jitter, but my 35-100's OIS is completely unusable for handheld video. I was extremely disappointed by the jittering.
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My experience (and disappointment) exactly. Let Panasonic know about this! The more people who bark about this to Panasonic, the better our chances of them fixing the 35-100mm lens.
 
Seems that very few people shoots video with these problem lenses. I think that more people should have been reacting these complaints if they have these lenses in use. At least I would.

Or maybe here are just "professionals" with tripods and rigs and casual shooters who cant see any faults in video or understand what they are seeing.

Or maybe I still have a faulty lens because my every video clip are unusable.
 
Vesku said:
Seems that very few people shoots video with these problem lenses. I think that more people should have been reacting these complaints if they have these lenses in use. At least I would.

Or maybe here are just "professionals" with tripods and rigs and casual shooters who cant see any faults in video or understand what they are seeing.

Or maybe I still have a faulty lens because my every video clip are unusable.
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As I posted before, I've used my 14-140 Panasonic lens on my GH-1, and now my Blackmagic Pocket Camera, and neither one exhibits 'OIS' jitter. I have in the distant past had a lens that had a problem, a Nikon lens, but I've not had that problem in a long time.

It is however recommended to turn OIS OFF while using a tripod or other 'stable' platform. In fact the problem lens that I had, did in fact 'jitter' while mounted on a tripod, otherwise it was 'fine', as it did compensate in some small way for 'handheld vibrations'.
 
j1clark@ucsd.edu said:
As I posted before, I've used my 14-140 Panasonic lens on my GH-1, and now my Blackmagic Pocket Camera, and neither one exhibits 'OIS' jitter.
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I wonder if you shoot handheld stationary (as still as possible) clips with 14-140mm v2 and Blackmagic Pocket Camera. I think it is difficult to hold steady because of small size. If you can do it without jitter I congratulate you. My lens jitters with GH4 and added weight rig no matter how steady I hold it.
 
From Noam Kroll blog:


http://noamkroll.com/6-dslr-video-t...ve-your-work-the-best-entry-level-dslr-today/


" 2.Avoid Micro Jitters!

Probably the most nauseating artifact of shooting with a DSLR (or any other camera with a small form factor) is the presence of micro jitters. What I am referring to are those tiny little shakes that will show up on your handheld footage, often not fully appearing until you look at your footage in post. You need to be very careful about the way that you shoot in order to avoid this problem, as even the slightest movement in your hand can wreak havoc on the image. Options to remedy this include using a tripod or stabilizer, but your lens choice makes a big different too."


Noam Kroll is an award winning Los Angeles based filmmaker, and founder of the boutique production company Creative Rebellion.
 
Vesku said:
Try shooting stationary clip with details handheld.
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If the shot is that stationary, I use a monopod or tripod depending. If that is not available I use any available support, such as a post, railing, wall, whatever. Since for 24 fps, 180 deg shutter yields a 1/48 or 1/50 for DSLRs speed, which can have any number of 'motion' related problems.

Since I don't recall if you have posted a clip exhibiting the symptoms you are seeing, but if you have point it out. Otherwise why not post and have others see what you are seeing.

I've posted my examples, and indicated the 'jitter' most likely in my case is due to handheld, rather than something wrong with the OIS.
 
j1clark@ucsd.edu said:
If the shot is that stationary, I use a monopod or tripod depending. If that is not available I use any available support, such as a post, railing, wall, whatever. Since for 24 fps, 180 deg shutter yields a 1/48 or 1/50 for DSLRs speed, which can have any number of 'motion' related problems.

Since I don't recall if you have posted a clip exhibiting the symptoms you are seeing, but if you have point it out. Otherwise why not post and have others see what you are seeing.

I've posted my examples, and indicated the 'jitter' most likely in my case is due to handheld, rather than something wrong with the OIS.
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If the lens works like it should there is no need for monopod or tripod at wide end video.

Look these:

My examples: https://vimeo.com/user23310531/videos

My posts:

http://www.dpreview.com/forums/post/54272785

http://www.dpreview.com/forums/post/53898448

http://www.dpreview.com/forums/post/54644911

http://www.personal-view.com/talks/...is-lenses-unsuitable-for-handheld-shooting/p1

http://www.mu-43.com/showthread.php?t=69428
 
Vesku said:
If the lens works like it should there is no need for monopod or tripod at wide end video.
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The amount of compensation for 'jitter' in OIS may not be enough to stabilize a handheld image.

As I said, for stills at low shutter speed, I would take three shots, maybe more, but at least three, as well as 'letting out my breath slowly' while shooting...
Which is the same technique one uses for shooting... because holding one's breath increases the possibility for 'jitter', and 3 allows for a high likelihood that at least one of the shots is when your heart is not pulsing blood through the veins, which also produces 'jitter'...

OIS is not a 'steady cam' replacement.

I'll try your setup if I have time...
 
One more try, one more disappointment...

One more try, one more disappointment...

I found a used 35-100mm lens locally, so I thought I'd take a second look at this lens. Sadly, the OIS problem convinces me to wait until Panasonic updates this lens.

I realize that shakes come from all sorts of issues (body movement, wind, etc.), but considering how well the O.I.S. works on my other lenses I have a hard time warming up to this lens. I also realize that at the long end of any tele lens, shooting without a tripod requires a tripod, but the O.I.S. fails even at the shortest end of the lens.
 
davidp158 said:
My experience (and disappointment) exactly. Let Panasonic know about this! The more people who bark about this to Panasonic, the better our chances of them fixing the 35-100mm lens.
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I was surprised to see that there was only one review on Panasonic's US webstore page for the 35-100 that mentioned the OIS problem. So I added a review of my own. If everyone who's bothered by the OIS starts reviewing the lenses on sites such as Panasonic, Amazon, and others, perhaps Panasonic might decide it really is a problem they should be looking at.
 
j1clark@ucsd.edu said:
The amount of compensation for 'jitter' in OIS may not be enough to stabilize a handheld image.

As I said, for stills at low shutter speed, I would take three shots, maybe more, but at least three, as well as 'letting out my breath slowly' while shooting...
Which is the same technique one uses for shooting... because holding one's breath increases the possibility for 'jitter', and 3 allows for a high likelihood that at least one of the shots is when your heart is not pulsing blood through the veins, which also produces 'jitter'...

OIS is not a 'steady cam' replacement.
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What you wrote is absolutely correct. OIS (at least for me) definitely is not a steady cam or tripod replacement. No matter how still I attempt to be, I shake and jitter like an earthquake, particularly at longer focal lengths.

However, what I do expect OIS to be able to do is to steady the frame in such a way that software stabilization can be used (in many cases) to make it appear rock steady. That has worked for me with the 12-35, but not the 35-100.

This morning I decided to do a little test. Shoot the same, static shot (handheld, of course) at 35mm with both lenses, with OIS turned on. The results were exactly as I expected: The 12-35's clip could likely be software-stabilized to look as if it were locked down, but the 35-100's clip has distortions in it that would ruin even a software-stabilized version.

Here's the vimeo clip, if anyone's interested:
https://vimeo.com/111664303

(And in case anyone's wondering, the two clips were shot with identical exposures, less than a minute apart. So the apparent exposure difference between the two is just an oddity of one lens letting a bit more light in than the other.)
 
kb99 said:
However, what I do expect OIS to be able to do is to steady the frame in such a way that software stabilization can be used (in many cases) to make it appear rock steady. That has worked for me with the 12-35, but not the 35-100.
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I've been looking for specification to better quantify what the engineers thought was acceptable correction... Like most things that are under the 'skins' of the device... such specs are not really available.

Most of the reviews are sort of 'I shot with some jiggling and the image was ok, for some subjective criteria of ok'...
 
I posted a review on the Panasonic store but it must have been censored as it never appeared. I tried to be objective in my review, but it did point out the O.I.S. flaw.
 
Vesku said:
Have you seen this:

http://vimeo.com/111664303

Comparison of problem lenses.
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That's my video clip that I linked to just a few posts above yours. :laugh:

davidp158 (dave patterson) added a great comment with links to other video comparisons, too:
youtu.be/xML3AFgu8BM
vimeo.com/76176641
youtu.be/DfqqmDwV9nU
youtu.be/1hXl0dCHaBo
youtu.be/Rl00rMhQP-Y
youtu.be/NTxzjeTdUYE
vimeo.com/106895202
vimeo.com/77795568
vimeo.com/106339636
picturez.smugmug.com/Videos/n-9Hcwt/i-L7VPbwH/A

It's disappointing to read that Panasonic may censor their reviews. But that might explain why there are only 2 reviews (now that I've added mine) mentioning the OIS problem.
 
davidp158 said:
Let Panasonic know about this! The more people who bark about this to Panasonic, the better our chances of them fixing the 35-100mm lens.
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I agree with this, and just wrote Panasonic via their "Contact Us" email page. I hope others with this problem will do so, also. I'll post the reply when I get it.

For now, here's what I wrote:
The description for this lens states: “POWER O.I.S with near silent drive optimized for video and still capture”. Therefore, I expected the OIS to be usable when shooting handheld video, but it actually makes video WORSE. Please refer to the video I uploaded that demonstrates the problem, and compares it to my other Panasonic lens: http://vimeo.com/111664303

My understanding (see comments in that video link) is that this is a problem with ALL copies of this lens, not my specific unit. I would like to know if Panasonic plans on fixing this, as at present it does NOT work as advertised.
 
Very few seems to care. It seems that not many are using these lenses for handheld video. More serious videographers use primes and "soccermoms" dont have a glue.
 
Vesku said:
Very few seems to care. It seems that not many are using these lenses for handheld video. More serious videographers use primes and "soccermoms" dont have a glue.
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The jitter is so bad that I'm sure it effects hand held photos, too. A blurred frame is still a blurred frame even for photography.

BTW, I don't think "soccer moms" are the intended demographic for a $1500 lens.
 
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