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Panasonic LUMIX G / GF / GH / GX Series
4K and AVCHD on a Micro Four Thirds system camera with interchangeable lenses.


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Old October 30th, 2014, 05:03 AM   #1
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GH4 SD Cards

Hi all,

I have recently sold my Sony NEX-EA50 and purchased a GH4 to use along side my Canon C100.

I currently only own Sandisk Ultra 30MB/s SD cards. Has anyone used these with the GH4? I have a shoot this weekend and would like the use the .MOV (edit: 1080p, not 4K) 100mbit recording option (so I can shoot at high frame rate). Is this going to be too much for my SD card, should I stick to 50mbit?

Thanks for any info.
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Old October 30th, 2014, 05:12 AM   #2
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Re: GH4 SD Cards

If you shoot at 4K you should use faster cards to be on the safe side, not fun if your camera would stop recording on a critical moment if the sd card can't keep up. I use Kingston 64gb sdxc sda3 cards that have 90mbs read and 80mbs write speed
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Old October 30th, 2014, 05:24 AM   #3
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Re: GH4 SD Cards

Thanks Noa. At this point I'm just looking at shooting 1920x1080 100mbit. I'll shoot 4k later on when I have better SD cards.
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Old October 30th, 2014, 05:42 AM   #4
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Re: GH4 SD Cards

The 4k should not be the issue, the bitrate would, 4K also records at 100mbs so your cards should be fast enough to keep up.
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Old October 30th, 2014, 05:51 AM   #5
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Re: GH4 SD Cards

Well 30MB/s is about 240mbit/s so technically my cards should easily be fast enough to keep up. I guess I'll need to do a bit of testing and make sure the recording doesn't stop after a long record.
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Old November 3rd, 2014, 12:26 PM   #6
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Re: GH4 SD Cards

I have used the Transcend class 10 32 GB cards and they work fine. Personally, I would only shoot 4k and up on this camera unless you want slomo.
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Old November 5th, 2014, 05:16 PM   #7
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Re: GH4 SD Cards

Yeah, its pretty hard to o back to shooting 1080 after shooting 4K. It provides so much possibility for reframing in post when mastering to HD.
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Old November 6th, 2014, 02:59 PM   #8
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Re: GH4 SD Cards

Just to update, I used my Sandisk Ultra 30MB/s cards to shoot in the 1080p 100mbit and 4K 100mbit modes and didn't have any issues. I haven't tried the 200mbit modes but will do soon.
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Old November 10th, 2014, 12:16 AM   #9
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Re: GH4 SD Cards

Even 200mbps is only 25MB/s (200/8=25).

It is all about the MINIMUM data rate the cards can sustain so your 30MB cards, provided they can sustain 25 continuously, (which they should) will handle 200 no problem.

If in doubt you can test your cards with utility software to measure the read/write speed.

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Old November 10th, 2014, 01:57 AM   #10
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Re: GH4 SD Cards

Buy a couple of Transcend 64gb Class 3 cards. 25 quid each in UK, probably the same but dollars in the US. Dunno about Kiwi land.

"Why spoil the ship for a ha'porth of tar?"


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