I have a quick video of both my cameras. The first camera is the one with the issue and I have followed by another GH2 which is functioning reliably and well with the Sanity X hack patched in. [

Ideas and/or suggestions on what I could try would be appreciated.

A big thanks to those who have placed so much effort into creating hacks for the gh2. I hope to explore the true value of a hacked GH2 as I navigate my way around this site.

Once again thanks to the ones that use their brain and take time to create some crazy good things !

I have a question about 4K photo mode.

For those who don't know, it enables to record 1:1; 4:3 and 3:2 image.

Here are the image sizes possible:

• 4K UHD 16/9
• 3840x2160
• 4K Anamorphique 4/3
• 3328x2496
• 4K Photo mode in mp4
• 1:1 2880x2880
• 3:2 3504x2336

With the combination of an anamorphic lens it allows in 1:1 for example, to shoot in 2x time anamorphic with a 16/9 ratio. (not exactly 16/9, maybe 17/9 or 18/9…)

It is awesome because you can have the benefit of shooting anamorphic without being restricted by the "cinemascope" format. This format is nice but may not be appropriate for all movies and anamorphic also has other great attribute :

• different bokeh.
• wider field of view.
• flares for those who like them.

So you'll tell me what's the problem ????

When you enter this 4K photo mode and want a live output via HDMI you need to have a 422 10bit output feed. This 422 10bit option disable the recording on SD card…

And as the output is via HDMI it can only output 4K…so all the various picture sized written above are downscaled to enter in a 4K size… For exemple the 2880x2880 become 2160x2160 in a 3840x2160 so you get a 4K UHD ratio with a square image on it, and so black recorded on left and right.

If you edit in 1080 HD, this 1:1 ratio recorded by 4K HDMIwith a 2x anamorphic, is used by 100% wide and 50% height… So that's not to bad but a little bit of deception as well.

I've tried this morning with a Atomos Shogun recorder I had a chance to use at a production company.

I really plan to test with a Odyssey 7q+ but I think it will be the same because all those equipment are made to work with standards and limited to 4K…

I don't understand why Panasonic made this limitation and in the same time gives us those possibilities (1:1, 3:2…)… They don't have a higher camera to be canibalized (like Canon with 5D and C300…) and they don't sell 4K portable recorders…

SO MY QUESTION IS : May GH4 be hacked ?

to allow 8bit HDMI output with 4K photo mode ?

or to allow recording 10bit 422 on SD ?

I understand the second option may be limited by hardware of the GH4 or by the speed of the SD cards.

The benefit would be 1- having the choice of the image ratio ! 2- having the ability to desqueeze image that I think is a necessity to have a good framing for the operator or other people of the staff/ client

Am I dreaming ? Maybe…but so sad to have the perfect tool for anamorphic and having to use it in a crazy/dangerous/not precise way !

And I don't believe the feature will be unlocked in GH5…

THX for reading! Best .V

I've recently started to get interested in C mount (CCTV) lens, for they are fast, wide, and cheap. So I wondered, is there any CCTV lens that I could use as a Fisheye (and get the same effect as the Panasonic 8mm f3.5, but faster) ? Here's a few lens I've found looking on the internet :

• Rainbow 3.5mm 1.6

• Tamron 4-12mm 1.2

• Pentax 6mm 1.2 (+ wide conversion lens x0.45)

Wanted effect :

The GH2 exact m4/3 sensor crop is x1.86.

So I would like to get the same widness as the Panasonic 8mm or any 8mm Fisheye (Samyang, Peleng, Rokinon...) :

Panasonic 8mm : 8 x 1.86 = 14.88mm equivalent (no need for ETC mode)

Rainbow 3.5mm : 3.5 x 1.86 = 6.51 -> 6.51 x 2 = 13mm equivalent

Pentax 6mm : 6 x 1.86 = 11.16 -> 11.6 x 2 = 23.2mm equivalent -> 23.2 x 0.45 = 10.44mm equivalent

x 1.86 : GH2 Sensor Crop

x 2 : ETC tele conversion mode crop (to cover vignetting)

x 0.45 : Wide convversion lens

Does that mean we could use any CCTV c mount lens instead of the Panasonic lens to get the wide fisheye effect ?

A few videos :

Lenses :

• http://www.ebay.fr/itm/Varifocal-Manual-Iris-CCTV-Lens-4-10mm-C-Mount-2-Mega-Pixel-VF-MI-4-10-C-2MP-/121077583241?pt=UK_CCTV&hash=item1c30c94d89

• http://tinyurl.com/qx3utvp

• http://www.ebay.com/itm/DV3-4X3-8SA-1-LENS-1-2-3-8-13MM-VARIFOCAL-MANUAL-IRIS-/150585299071?

C mount lens (1/2") work well on the GH2, but I heard that the CS mount lens (1/3") would still have really heavy vignetting because even with the ETC mode it would not cover entirely the GH2 sensor. Is that true ?

Interesting CS mount lens, but 1/3 inch : http://www.ebay.fr/itm/TAMRON-Manual-Iris-CCTV-Lens-3-0-8mm-1-1-0-ASPHERICAL-C-Mount-3-Mega-Pixel-/261248954560?pt=UK_CCTV&hash=item3cd3a6b0c0

I would use the fisheye to film Skateboarding.

Thank you.

Setup - In order to achieve the higher bitrates I had to use M from the dial atop the GH2. The camera icon with the M would not allow this. The tradeoff was Auto ISO with M, and adjustable ISO with the camera icon with the M. I use mostly Canon FD lenses.

1a) Bitrates - I have tried a few hacks with varying success. The best I have got is about 100MB with Flow Motion v2.02, however, most of the shots I got with this hack seem to be from 70MB-90MB. I tried Flow Motion, Driftwood's Moon T7, and two Driftwood hacks (176MB & 220MB) from a pack made by the user Sohus on this forum.

Is it common to be well below the stated bitrate amounts?

1b) AVCHD vs MJPEG - I never seemed to get very high bitrates when using 1080i, despite the hacks stating to be much higher. They would range from 15MB-40MB. To achieve higher bitrates with Flow Motion, I used MJPEG which boosted them much higher.

Shouldn't I be achieving high bitrates with AVCHD?

2) Auto ISO - Whenever I use M (from PASM) the ISO would always be set to Auto ISO. I could adjust the ISO when using the camera icon mode (with the M), but then the bitrates would suffer. I tried changing the ISO before shooting, but Auto ISO would kick in no matter what.

How do I change the ISO while in M mode?

3) EV - I know that EV depends upon shutter, aperture, and ISO, but I can see the EV when I push the Display button so I was hoping there was still a way to change it.

Am I correct to assume that because I am using Canon FD lenses I cannot use EV? Even if using a Panasonic lens, how do I change the EV (I tried, but failed).

4) Modes - I have only been able to use the hacked bitrates - and only to a certain degree - by using M with MJPEG.

What modes should I be using to use the hacked patches? The camera icon with M? High Bitrate? 24P? 1080i?

Sorry for all the questions. I am not unhappy with the camera, but I really want to know why the bitrates are not working? And moreso, why the Auto ISO can't be changed (as I don't like the amount of noise it can introduce)? Thank you!

The MP4, 24p 1080 All-Intra 200mbps file size was 148.7 MB The MP4, 24p 1080 IPB 100mbps file size was 291.8MB

Any suggestions?

What is the best way of knowing which mode corresponds to each in-camera setting? ie. When I select Manual Movie Mode, HBR, Cinema, or variable, what am I actually getting? Is there a list of where and how I can get each of the settings? Or should I shoot a sample in each, and use media-info to figure that out?

I use my GF1 + firmware hack since more than 6 months, it's great, congratulations :)

I have the following problem :

• Set "Mode A" for video

• Shut down the camera

• Power on the camera

• The "Mode A" setting for video is forgotten! The only way for having "Mode A" for video again is : go in the menu, set ANOTHER mode , e.g. "Mode P" for video, and THEN go in the menu again and set "Mode A" for video again.

I know somebody else having the same problem, with the same camera.

Who should I contact about this little bug?

Thanks in advance.

Has there been a hack to get the high speed burst mode (40fps) of the GH2 at a lower res to get faster fps? Is there no way this can be done? Is it hardwired or something?

I know that Nostalgic film mode has best dynamic range (from what I've read), but I also read on EOSHD Guide to GH2 that Black and White Smooth Film mode on GH2 is supposed to have the best DR and smoothest gradation out of all film modes. Should I just shoot Black and White Smooth mode straight in the camera or do use another mode and then do B&W in post? How about the best patch?

Any input is appreciated enormously,

Thank you so much.

I have a question. For my professional videos with my GH2, so with controlled lightning etc, I of course use the creative video mode and so did I also during my private videos. At one time I needed to take a picture during a video take and found out, that I can not do this in creative video mode. But in A S M P and many other modes, when I film in these modes. Now the chosen video format, SHG, SH (1080i, 720p,) or so stays the same in the other modes. What is different is, that in these modes, Auto ISO jumps in which can mot be overruled.

When I film outside with good light I do not care. Other things like aperture, shutter speed etc ca be set manually in the normal modes ad well.

So my question to the GH2 experts: What are the other differences/advantages From creative video modes to A S M P Modes

Advantage creative video mode: 1. control of the ISO 2. ?

Advantage A S M P modes: 1. pictures can be taken during video filming 2. ?

Thanks already, any answer will be appreciated.

@ Vitaliy, if you ind a thread, where this question fits please shift it there or let me know and I post the question there again.