Panasonic GH4 with 4K, 200 Mbit / s, 10-bit 4:2:2 via HDMI and opt. 3G SDI Out
[07:06 Fri,7.February 2014 by Rob]
With the GH4 provides Panasonic before the first loud 4K firecrackers of the year. The GH4 records both real 4K with 4096x2160 pixels and 3840x2160 pixels QFHD with. Additionally, it offers via HDMI maximum 10 bit 4:2:2 HD and add the new interface unit DMW-YAGH even four parallel Full HD (4:2:2 / 10-bit) SDI outputs, which are then used 10 bit 4:2:2 via SDI 4K is enabled. PIC1Z The sensor of the new Panasonic GH4 is a new Live MOS sensor as the predecessor with 16 MP (4608 x 3456 pixels) works. As image processing unit is a quad-core Venus Engine CPU is used. With 50 ms of GH4 Live MOS sensor is read out twice as fast as that of the GH3. This fast readout should make himself especially when rolling shutter behavior noticeable that this may reduce significantlyto have been reduced. Although Panasonic is done (with the exception of a now by central push button lockable program selection wheel) but under the hood it has a whole lot in the GH4 the exact same Gehaeuse as in the GH3. Thus, the OLED viewfinder is now working with 2.359 million pixels, the folding and rotatably mounted 7.5 cm touch screen has 1,036,000 pixels and also the already quite fast contrast autofocus was accelerated via DFD technology again. This is reflected in the continuous shooting, the focus tracking mode are identified with kontinuiericher (AF-C) 7 B / s in Photo mode creates the AF-S even 12 B / s (100 JPEGs, 40 RAW). PIC2Z But the really fundamental innovations are the video area reserved and can be quite impressive. Since it is not so easy,by the complex dependencies of resolution, data rate, frame rate and compression method by climb we have here once knitted together a graphic that illustrates the various video formats GH4 quite well: u003cbu003ePanasonic GH4 video formats, image and data ratesu003c/bu003e u003cstyle type=�0Hz u003c/tdu003eu003ctdu003e 24p u003c/tdu003eu003ctdu003e 100 Mbps u003c/tdu003eu003ctdu003e IPB u003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003e 3840x2160 u003c/tdu003eu003ctdu003e 59.94Hz u003c/tdu003eu003ctdu003e 29.97 / 23.98p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 50.00Hz u003c/tdu003eu003ctdu003e 25p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 24.00Hz u003c/tdu003eu003ctdu003e 24p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003e MP4 u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 59.94Hz u003c/tdu003eu003ctdu003e 29.97 / 23.98p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 50.00Hz u003c/tdu003eu003ctdu003e 25p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003e MOV / MP4 u003c/tdu003eu003ctdu003e 1920x1080 u003c/tdu003eu003ctdu003e 59.94Hz u003c/tdu003eu003ctdu003e 59.94p / 29.97p / 23.98p u003c/tdu003eu003ctdu003e 200 Mbps u003c/tdu003eu003ctdu003e All-Intra u003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 50.00Hz u003c/tdu003eu003ctdu003e 50p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 2400Hz u003c/tdu003eu003ctdu003e 24p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 59.94Hz u003c/tdu003eu003ctdu003e 59.94p / 29.97p / 23.98p u003c/tdu003eu003ctdu003e 100 Mbps u003c/tdu003eu003ctdu003e IPB u003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 50.00Hz u003c/tdu003eu003ctdu003e 50p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 24.00Hz u003c/tdu003eu003ctdu003e 24p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 59.94Hz u003c/tdu003eu003ctdu003e 59.94p / 29.97p / 23.98p u003c/tdu003eu003ctdu003e 50 Mbps u003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 50.00Hz u003c/tdu003eu003ctdu003e 50p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003ctru003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003e 24.00Hz u003c/tdu003eu003ctdu003e 24p u003c/tdu003eu003ctdu003eu003c/tdu003eu003ctdu003eu003c/tdu003eu003c/tru003eu003c/tableu003e The internal SD card recording done durchgaengig 8-bit 4:2:0. Who needs 10 bits are required to record externally and has taken either the HDMI-Out forCan spend disposal, the maximum 10-bit 4:2:2 HD (but then without internal recording) or 8 bit 4:2:2 external via HDMI in parallel (backup record) to SD card with 4:2:0 8 bit or the new optional SDI interface unit (4xSDI, TC, 2xXLR,) PIC3Z How does the graph is possible also refer, are 100 Mbit / s at IPB compression reserved 4K formats, while HD up to 200 Mbit / s also All-Intra can encode. Besides, the 4K image of the Panasonic is GH4 herausgecroppt directly from the 16 MP sensor, with which the necessary for 4K pixels are read natively, which is also likely the resolution come to the best, because no pixel interpolation takes place. However, for 4K thus extending the crop factor by about 17%. Here are some videoafine functions of the new Pansonic GH4: TheAbsence of a colored focus peaking and no zebra display were two of our main points of criticism when www.slashcam.de/artikel/Test/Panasonic-DMC-GH3---Praxis---alles-.html # T1 (Test of predecessor in GH3) been. Nice to see that Panasonic has now risen here and with the GH4 provides a colored peaking. Also a new black level setting is found in the GH4 that is possible to set in 31 steps. Likely to use also good for filming a newly added switchable center mark (cross) be. Curves can also be found in the GH4 we suspect a similar feature as in other Lumix compact cameras. Whether it&s enough with the GH4 to a log gamma function tease out remains to be seen. For this, the GH4 comes with a so-called Cinema gamma setting, which we stilldo not quite know how it works and whether it is for subsequent color corrections scope for disposal is what you would expect from the 8-bit log-material of the Canon EOS C100 ago. Speaking of Canon EOS C100: Panasonic speaks at the GH4 by a further significant increase in the down-scaled from 4K HD quality. This should not be forgotten in all of this around us 4K hype. In order for the Panasonic GH4 could be a serious competitor to the Canon EOS C100, its HD video quality so far counts with the best of the class. So HD please do not lose sight here could something pretty fine waiting for us Panasonic has announced so far neither prices nor for the vacancies to GH4. Our impression was of a first hands-on of a pre-production model that there is still a lot of
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