4K Panasonic GH4 May Arrive This Spring to Compete Against Canon Cinema Cameras - Page 28 - AVS Forum | Home Theater Discussions And Reviews
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post #811 of 835 Old 04-12-2015, 03:44 AM
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GH4 or a future GH5 would this lens http://www.sigma-imaging-uk.com/inde...product_id=373 work in video mode with a http://slrhut.co.uk/product/ID790C11/view
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post #812 of 835 Old 04-16-2015, 05:45 AM - Thread Starter
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Panasonic GH4 firmware with VLog-L





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This is a (pretty boring) test of the new LOG profile coming to the Panasonic GH4. We were able to preview this on pre-release firmware from Panasonic, and the results are impressive. Vastly improved dynamic range makes it far easier to hold the highlights compared to Cinelike-D. Shadows are noisier, but it's worth it for all the detail you get. Grading was done entirely in Final Cut Pro X, so it's nothing too crazy, but should still illustrate the benefits of LOG over Cinelike-D.

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post #813 of 835 Old 04-16-2015, 05:45 PM
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I doubt that the shadows are any noisier once the footage has been properly delogged. Panasonic could assist their GH4 user base by providing 3D.cube luts to delog the footage in post before grading. Luts do a better job of remapping the the gray scales into the appropriate IRE levels, than trying to do that with grading tools like gain, offset, gamma etc.
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post #814 of 835 Old 05-08-2015, 05:18 AM - Thread Starter
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KIPON Canon EF-MFT autofocus electronic adapter

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Five years ago, KIPON developed out world first mechanic adapter with built-in iris, to use Canon EF lens on MFT(m4/3) body, to solve the problem for only electronic iris control of Canon EF lens. Today still KIPON, we bring to market a new world first full Auto-focus adapter, to use Canon EF full frame and EF-S Apsc lens on MFT(m4/3) body.
http://www.kipon.com/en/articledetail.asp?id=80

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post #815 of 835 Old 05-08-2015, 07:06 AM
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So that adaptor gives all functions on lenses like i showed,at this stage waiting to see what the next model GH has going for it is a must at this stage for me.
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post #816 of 835 Old 05-09-2015, 05:54 AM - Thread Starter
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I guess it has all of the lens control functions of a Canon DSLR body . I don't have any Canon lenses so I will stick with my Pentax K mount and Nikon F mount m4/3rd adapters without AF and use my native m4/3rd lenses if I need AF, OIS etc.
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post #817 of 835 Old 05-25-2015, 05:15 PM - Thread Starter
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bike race in C4K with Leica 42.5mm F1.2 IS

I tried a different combo this Memorial Day since my Samsung 4K smart TV has 4096x2160 mode when hooked to my 6-core Mac Pro, Last year I shot UHD with the 25mm F0.95 Nokton @F2.8 and this time I shot C4K 4096 with the 42.5mm F1.2 Leica @ F1.8 and 1/8000 sec.


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post #818 of 835 Old 05-27-2015, 06:37 AM
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Quote:
Originally Posted by jogiba View Post
I tried a different combo this Memorial Day since my Samsung 4K smart TV has 4096x2160 mode when hooked to my 6-core Mac Pro, Last year I shot UHD with the 25mm F0.95 Nokton @F2.8 and this time I shot C4K 4096 with the 42.5mm F1.2 Leica @ F1.8 and 1/8000 sec......
Joe,

Why did you shoot with that shutter and aperture combination?

Thanks.

Bill
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post #819 of 835 Old 05-27-2015, 06:49 AM - Thread Starter
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I wanted to extract stills out of the C4K video. I did the same last year with the 25mm F0.95 Nokton but I did not use my monopod and it shows even with IS since the 42.5mm is equal to about 100mm on full frame . Here is what I did last year.




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Using Video Frames for Stills
It wasn’t that many years ago that 8 Megapixels was a decent sized image capture. Many an ad campaign, magazine cover and fine art image was made with 8MP or even less. Now with 4K video cameras we have what is essentially an 8 Megapixel camera shooting stills at a machine-gun like 24 images per second. I have taken many of these frames and made very nice 13X19″ prints from them and I would not hesitate to put one in a book or on a gallery wall. But there’s a gotchaand it has to do with frame rates and shutter speeds .
Video or film shot at 24 FPS, the industry standard for cinema. It is normally shot with a shutter speed of 1/48 second, or what the film industry calls a 180 degree shutter. In other words the shutter speed is double the frame rate.


That 1/48th second shutter speed is what gives movies their familiar motion cadence. Things that move have a small amount of blur and this makes the action look “natural”. Now, there are decade-long debates about this, but for the moment accept it as the norm. And if you don’t believe me, try shooting some video with a shutter speed of 1/500 sec and see what it looks like.Yikes.


What this 1/48 second shutter speed means is that when you try and extract a still frame there may be some blur when anything in the frame is in motion, or even from camera shake. Now, if you’re using a tripod or a stabilized lens hand-held, then camera shake is not likely to be a problem – unless a long lens is in use. But if someone is turning their head, or otherwise in motion, you simply won’t be able to extract a clean still. Sometimes you’ll get lucky. You do have 24 stills every second to choose from, but maybe not.


The answer is to shoot 4K 24 FPS video with a high shutter speed, and forget that you’re shooting video. You’re shooting high frame rate stills. So at an event with rapid action, go ahead and set the shutter to 1/500 sec, or even higher. With the video clip on a 4K timeline find the frame(s) you want and just do a “Capture Frame”. Then load it into Lightroom, Photoshop of whatever is your favourite. You’ll have the equivalent of a 8 Megapixel JPG to work with. If you have set the camera to a low contrast, low sharpening setting you’ll likely be able to do some reasonable amount of post processing without the image degrading.
https://luminous-landscape.com/gh4-video-primer/

Also if I had the latest GH4 firmware I would have shot it at F1.2 and 1/16000 sec shutter for even more shallow DOF but I shot it at F1.8 and 1/8000 sec shutter speed.





click here to view youtube screenshot off my 4K UHD monitor
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post #820 of 835 Old 06-02-2015, 02:11 PM - Thread Starter
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55x zoom f/1.7 Fujinon lens on the Panasonic GH4!


http://www.43rumors.com/55x-zoom-f1-...panasonic-gh4/
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post #821 of 835 Old 06-02-2015, 06:39 PM
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Now that does look hysterical, Joe!
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post #822 of 835 Old 06-03-2015, 06:16 AM
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Interesting how long zoom the set up will go before it loses 4k or rather UHD resolution,even with an expensive Canon 1.5x extender 900mm has no more than 1920x1080P resolution on my FZ1000.
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post #823 of 835 Old 06-06-2015, 10:09 AM - Thread Starter
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GH4 with 100-300 and 14-45mm kit lens

Shooting handheld from the grandstand with my GH4 and 100-300 @100mm (230mm FF eqiv) with fast shutter and in the pits with 14-45mm kit lens @14mm (32.2mm FF eqiv) in C4K yesterday at the NHRA Summernationals drag race , the good , the bad and the ugly.




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post #824 of 835 Old 06-06-2015, 03:21 PM - Thread Starter
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GH4 with Leica DG Nocticron 42.5mm f/1.2


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post #825 of 835 Old 06-08-2015, 06:38 AM - Thread Starter
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some hot Courtney Force Videos on youtube

One reason she is a fan favorite other than the fact that she has the NHRA National Funny Car speed record of 325.06 MPH set a few weeks ago.
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post #826 of 835 Old 06-09-2015, 04:37 PM - Thread Starter
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Metabones introduces Speed Booster XL 0.64x

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Metabones has announced a new Speed Booster designed for the Panasonic Lumix DMC-GH4. The Speed Booster XL 0.64x is designed to reduce the camera's 2x crop factor by 0.64x, meaning that in 4K video mode the GH4's 2.34x crop factor becomes 1.50x - Super 35 cine format. The new speed booster is much like the existing BMCC Speed Booster for Blackmagic cameras, but has be redesigned specifically to prevent it fouling the GH4's shutter. A 21.63mm image circle also ensures the full Four Thirds image sensor is covered.
A handful of other Micro Four Thirds bodies are compatible with the Speed Booster XL 0.64x, including the Olympus E-PL7 and Panasonic Lumix DMC-GH3. Other models are not officially supported, as use with the adapter may cause damage to the shutter mechanism. The Speed Booster XL 0.64x will be available this month for $649 (Canon EF mount) and $479 (Nikon F/G mount).
http://www.dpreview.com/articles/995...-panasonic-gh4

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post #827 of 835 Old 06-12-2015, 08:24 AM - Thread Starter
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BTW Mark Rebilas got a great still shot of the Morgan Lucas engine explosion that is in my video above.



http://markjrebilas.com/blog/
https://twitter.com/rebilasphoto

It looks like he is in my video.





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post #828 of 835 Old 06-13-2015, 12:34 PM
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I posted some fishing videos earlier in this thread and since then we have kept working with the Gh4s and it is a nice little beast to work with. We work with two cameras, both with speed boosters and canon glass such as 50mm f1.8, canon 70-200mm f2.8, canon 16-35mm f2.8 and sigma 17-50mm f2.8.

I think we get mostly good footage with the GH4s, the colors can be a bit weird but hopefully we will see change in that with V-log and some nice LUTs in the close future. Sometimes we have a hard time to pull focus aswell as you might see in some clips, a bigger monitor is recommended.

Here is a film we made at the Swedish Sportfishing fair, I am really pleased with the look we got in this video:

Here is the latest video we made for ForshagaAkademin, here we filmed their trip to Norway with their students to teach them how to act as fishing guides. In this video we have mixed handheld shots and interviews.
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post #829 of 835 Old 06-13-2015, 02:45 PM
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Quote:
Originally Posted by Christian Berger View Post
I posted some fishing videos earlier in this thread and since then we have kept working with the Gh4s and it is a nice little beast to work with. We work with two cameras, both with speed boosters and canon glass such as 50mm f1.8, canon 70-200mm f2.8, canon 16-35mm f2.8 and sigma 17-50mm f2.8.

I think we get mostly good footage with the GH4s, the colors can be a bit weird but hopefully we will see change in that with V-log and some nice LUTs in the close future. Sometimes we have a hard time to pull focus aswell as you might see in some clips, a bigger monitor is recommended.

Here is a film we made at the Swedish Sportfishing fair, I am really pleased with the look we got in this video:
https://www.youtube.com/watch?v=fi4WDysVt7A

Here is the latest video we made for ForshagaAkademin, here we filmed their trip to Norway with their students to teach them how to act as fishing guides. In this video we have mixed handheld shots and interviews.
https://www.youtube.com/watch?v=Nj9pB3MVgzU




What Canon to micro four thirds adaptor do you use ?,there is one out or soon available that gives AF as well as aperture control i believe.
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post #830 of 835 Old 06-13-2015, 11:52 PM
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Originally Posted by flintyplus View Post
What Canon to micro four thirds adaptor do you use ?,there is one out or soon available that gives AF as well as aperture control i believe.
We use the electronic 0.71x crop one, the older standard one :P I've seen the new 0.64x crop one and would love to own one but not worth the few extra crops and the 1/3 stop of light for us at the moment. But will the new one have good AF?
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post #831 of 835 Old 06-14-2015, 12:08 AM
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Quote:
Originally Posted by Christian Berger View Post
We use the electronic 0.71x crop one, the older standard one :P I've seen the new 0.64x crop one and would love to own one but not worth the few extra crops and the 1/3 stop of light for us at the moment. But will the new one have good AF?
As wildlife is my thing i need all the reach i can get so one that does not reduce the crop is best for me,the new AF one needs some reviews before considering true,i have pretty much decided to wait now for the next GH model before purchasing,i wish Pana made a 50-500mm that would be a good lens for me but it wont ever happen.

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post #832 of 835 Old 06-14-2015, 12:35 AM
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Originally Posted by flintyplus View Post
As wildlife is my thing i need all the reach i can get so one that does not reduce the crop is best for me,the new AF one needs some reviews before considering true,i have pretty much decided to wait now for the next GH model before purchasing,i wish Pana made a 50-500mm that would be a good lens for me but it wont ever happen.
Ok, the AF is probably not as good as a native lens anyway.

I don't think I will go with the next GH model, right now I'm really looking into a camera like the FS7 or the Ursa Mini. Of course out of our budget but next upgrade would be nice. But the Sony came with the A7R II which looks damn good for fishing film and other handheld situations with its IBIS. If sony or Panasonic comes with a camera with 4K 60p internally, IBIS, 120fps+ 1080p slow-mo then they would be a better alternative than a videocamera yet again :P My bet is that the Sony A7S II will be damn impressive with the specs I just mentioned.
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post #833 of 835 Old 06-14-2015, 10:13 AM
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Originally Posted by flintyplus View Post
...i wish Pana made a 50-500mm that would be a good lens for me but it wont ever happen.
I think Olympus makes a a M43 75-300 and a doubler for it. It might work on the Panny 100-300 too.

http://www.bhphotovideo.com/c/produc...converter.html
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post #834 of 835 Old 06-14-2015, 12:10 PM
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Originally Posted by bsprague View Post
I think Olympus makes a a M43 75-300 and a doubler for it. It might work on the Panny 100-300 too.

http://www.bhphotovideo.com/c/produc...converter.html
interesting thanks.
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Some screenshots from above posted videos taken with GH4 handheld and 100-300mm @100mm (230mm FF eqiv in 4K ).


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