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Found 10 results

  1. What is the best way to deal with potential banding from the A7s and from other cameras that produce 8-bit files? Here is an example of banding that appeared in A7s footage after pushing it in post. Thanks!
  2. Hello everyone, I just installed Magic Lantern on my 5D3 last week. I have been doing some test shoots with it, but I keep coming up with this vertical banding. I have looked all over the place to find a solution, but can't seem to pin one down. I don't know if this is a problem within my camera, or the program I used to process the RAW image to CinemaDNG. Any suggestions would be incredibly helpful. Thanks!
  3. Hello,   I have been experiencing a problem every so often with my relatively new GH2 in which I will see this strange red line going across the frame.  Please see the attached image for a visual reference (in this still the line is on the upper third of the image if you are having trouble finding it).   This line moves about and varies in width and position, depending on how the camera moves.  The problem seems to occur out of nowhere, although I haven't seen it enough times to say that for certain, and seems to also go away on it's own.  It hasn't wrecked any shots for me yet, but it's not good and I was wondering if anyone else had a similar problem.   I had some work done on the camera recently and I'm wondering if in the process of this job the sensor may have been damaged in some way.  The camera is NOT hacked.    Thanks for your time.
  4. Just back from two days in a row of shooting. Some shots had some really serious banding or flickering. I don't understand it at all. Also because other shots under the same circumstances haven't the same problems. Thank god I have enough shots to create the vid.  Because I'm still learning how to shoot with all the settings on my GH3 I set everything on automatic except the diaphragm - A modus. Other settings; MOV, 24 p - 50 Mbps (for Europe), Contrast -5, Sharpness -5, Color -3, Noise reduction -4.  I used the one point (correct name) setting, for measuring the light.    Anybody a clue why this occured? So I will be prepared next time. And is there away to fix it in post with FCP X?   https://vimeo.com/61454321
  5. ScottBastedo

    GH3 ISO Test

    I've uploaded some test footage from the new Panasonic GH3.    The first portion of the video contains fairly even lighting with tests from f2.8/ISO 200 - f16/ISO 6400. The second portion introduces a hot spot via a desk lamp. Test are from f4.0/ISO 200 - f22/ISO 6400.    Gradation looks very good in the bright areas of the footage. Blacks are fairly consistent throughout. ISO 200 - 800 appears damn fine, as far as noise is concerned. ISO 1600 fairly good and easily workable.  ISO 3200 is usable. 6400 is useless.   https://vimeo.com/58314941
  6. Hello all I've got my hands on a GH2 and I was planning on shooting some footage of various LCD screens. This will be custom software in use at specific locations so I can't use Camtasia or similar. Whilst running some tests, I've noticed some severe banding on certain screens. All the screens so far have been 60hz. I've shot in PAL 25fps and NTSC 30fps at both 1/50 and 1/60 (and other shutter speeds) but I can't lose the banding. The frequency of the bands changes but no shutter speed loses it completely. All other settings are either neutral or off i.e. standard mode flat and no ExT, no Digital Zoom etc. The same screens shot on my point and shoot Lumix DMC-TZ10 show no banding at all. It seems strange that a budget camera doesn't show banding but the GH2 does regardless of the settings. I believe I understand the sync differences that cause the banding but don't understand why I can't get rid of it on the GH2. Example footage here: GH2 banding: [media]http://www.youtube.com/watch?v=v1Q1D1QDMdk[/media] DMC no banding: [media]http://www.youtube.com/watch?v=ehLH82zGYXM[/media] So my question is, does anyone have experience of successfully shooting LCD screens on a GH2 or other DSLR type camera? Am I expecting too much or perhaps doing something wrong - maybe there's something I haven't tried? Thanks for any advice. Gareth
  7. Here is my test I did today.  There are a few notes to be aware of:   1) There is moire evident when set at 0 (roof of the pavilion).  At -5 there is none, although the compression of youtube introduces moire. 2) Excessive sharpening in post is akin to sharpening in-camera by re-introducing moire.  Not only that but it also exacerbates banding as well.  The last shot of the sunset, you can see a sort of "pulsing" wave above the sun.  This is not present in either the 0 or -5 setting, although you can see some banding in the 0 setting. 3) There is a lot of noise at -5, but there's more detail too.  Proper noise reduction will help. 4) Contrast isn't easy to fix.  I made a bunch of other shots, however I wasn't able to match them.   Never forget we're dealing with an 8 bit codec.  You can grade the footage, but only so far.  And trying to fix things in post could result in worse problems.  The banding was especially surprising, and it looks worse in the ProRes version.  I think it best to find the right compromise for the type of shooting you do.  And you have to get your exposure and contrast as close to final version as possible.  The GH3 is better than the GH2, and you have some room to adjust, but it still isn't a whole lot.   http://youtu.be/qxxFe_y-2y4
  8. My crusade against color banding on the GH2 continues. The Flowmotion hack (v2.02) minimizes banding as well or better than any hack I have tried, but I still get unusable shots from time to time. Today, I used FCP7's log and transfer to import a single clip with banding issues. Then I used 5DtoRGB to process the same problem clip and exported every possible combination to see if there was a magical setting that would stop color banding altogether. There isn't. But somewhat unsurprisingly, ProRes 4444 / Full Range / ITU-R BT.601 seems to be a significant improvement. Here are the settings: [img]http://www.eoshd.com/comments/uploads/gallery/album_15/gallery_18451_15_2014.png[/img] Andrew has posted about using these settings (or with ProRes 422 at least) to preserve color information, but it seems to have an effect on banding as well. To see for yourself, you can go to my photo album on this site ( [url="http://www.eoshd.com/comments/gallery/album/15-5dtorgb-vs-gh2-banding-problem/"]http://www.eoshd.com...anding-problem/[/url] ) and download the screen grabs. For best results, I recommend viewing them in rapid succession in a program like Preview like this: [img]http://www.eoshd.com/comments/uploads/gallery/album_15/gallery_18451_15_497834.png[/img] The only downsides are that the files are about twice as large as good old ProRes 422, and it takes MUCH longer than FCP7's log and transfer window.
  9. Can anyone tell me what is causing the horizontal banding at the top of the wall outside of the bedroom in these two shots? I was testing a steady cam today and noticed my Gh2 (24p, flowmotion hack) was showing these horizontal bands along the top. Yes, I've had trouble with the already much discussed High ISO/Underexposed area (mine shows up as low as 400 ISO) and thought I would try the same work around...shoot at a shutter speed of 30. Didn't help, the first photo was with a SS of 30, the second is with a SS of 50. The banding looks different, but is clearly there on both. Part of me is hoping it has to do with the light coming in from the windows and reflecting off the lens...but I don't think that's it. Anyone had anything similar. Getting REALLY frustrated with all the crap that keeps popping up trying to shoot with this camera. Every time I think I'm getting used to the work arounds, something else comes up. I REALLY hope panasonic has read some of these forums and correct all of this banding issue in the GH3....it really makes the camera almost unusable in any kind of professional situation. Sigh. BTW...the pics are frame grabs from video...not still photos.[attachment=288:photo-3.JPG][attachment=289:photo-4.JPG]
  10. [b]Dear Andrew, Dear All,[/b] I am one of these fans visiting EOSHD.com every day, a couple of times and checking every update. So finally after purchasing my GH2 I decided to register to the EOSHD forum. Just finished university and now have some time to film with my brand new GH2. I am living in Germany and bought my GH2 from a Germany onlineshop. The serial number starts with WE1HA. Now as I have rad the EOSHD GH2 shooters guide and went out filming I discovered one really sad GH2 bug which I found out is well known. The horizontal darker line ind footage shot over ISO1000 and underexposed situations. Panasonic is aware of the problem and many users complain about this problem. http://vimeo.com/17281822 http://personal-view.com/talks/discussion/693/gh2-showing-fixed-darker-bandstripe-20-pixels-high-across-footage/p1 If you read all these posts you'll see, that each GH2 seems to have a problem with this issue. [b]Andrew Reid,[/b] from reading sooooo many of your posts and articles I know you have some contact to Panasonic. Don't you think it is time to ask Panasonic to solve this problem and take back all the thousands of defective GH2s? I am so sad I just discovered this after my 2 weeks return policy expired. Now I have to live with this but maybe Panasonic could work around the problem? Any chance you could ask Panasonic for an official statement? Kind regards, Vincent
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