A7s vs GH4 at 4K Video | Clean HDMI Out ComparisonVideo blog


A7s vs GH4 at 4K Video | Clean HDMI Out Comparison

Views: 36263

Likes: 119, Dislikes: 22

Channel: MichaelTheMentor

Date: 19.07.2014 19:00:03

Watch the full Epic Shootout HERE: ?v=qdMypfYrKgw Here is the 4K SLOG footage test between both cameras at ISO 3200: A very sincere thank you to : Sony A7s: Pansonic GH4: --- I know there will be a lot of technical type questions about how this test was performed and more specifically about how the footage was recorded from the HDMIs on both cameras. Suffice it to say, it was not cheap, easy or fun, but I felt really determined to find a work around and was able to do so, by September, the way I did it will be obsolete as the Shogun Recorder should be available. Important to note, there were a lot of technical problems, from the lenses, composition, camera set ups, lighting, camera settings, exposure, capturing, editing, exporting, but I just wanted to try to get a ball park idea of what was going on and give you guys the information to help you come to your own conclusions. The footage is much better coming out of the cameras. There is some compression when I export, there is more when Youtube processes it, still it should give you guys an idea of what you can get out of each camera. I already have a very detailed tutorial training video on the GH4 for those of you who want to learn all about it: ?main_page=product_info&cPath=3&products_id=74 We should be starting the A7s Tutorial Training Video shortly and should have it ready near the end of August.


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A7s vs GH4 at 4K Video | Clean HDMI Out Comparison

MichaelTheMentor

19.07.2014 19:52:25
Found a hack-a-round to get 4K HDMI footage recorded off of the A7s and decided to do a quick comparison to the GH4 (at 10 bits). The A7s is looking very impressive to me, too bad it cannot record this in camera! 

SomeLittleShoe

20.07.2014 6:14:28
One thing that is without argument, that girl looks utterly fantastic.

mp4podcastDOTcom

18.03.2015 3:07:49
The skin tones at ISO 800 look much better on the Sony A7S. GH4 is still a good camera but you need to light it more for filmmaking.

MichaelTheMentor

19.07.2014 19:06:03
Check out the Sony A7s 4K (8 bit) video as it compares to the GH4 4K (at 10 bits)! 

peanuts2105

19.07.2014 23:23:52
Just watch with the mute button on. That'll be all

Christopher York

20.07.2014 3:43:48
One thing to mention. Likely the A7s shot was clipped in the whites and blacks due to it outputting full range whereas the GH4 is set to output 16-235 by default. So, in FCPX or Premiere, you'd need to address that, then export with the proper range being displayed. Basically, the A7s should have at least another stop of range left on top of what it already shows.

MeTube

23.05.2015 14:33:10
GH4 has a more cinematic look.

Adil Qatine

20.11.2014 13:24:15
A7s is
gh4 bad in low light.
We wait New camera 4k cheap

Maro Vok

23.03.2015 0:30:05
Hot model , definitely want to see ,more of her with less cloths in 4k.

AHL SPOTTER (YILMAZ)

13.03.2015 12:31:25
beautiful model.. very good ?

Cal Fornia

19.07.2014 22:16:53
I know youtube does not do a good in video compression, but GH4 looks flat and muted, whereas the Sony A7s has more DR and lively colours. Looks like A7s is a winner in 

Bring To Light Productions

29.01.2015 2:33:46
Did you white balance the AT?

Yoky Valery

06.12.2014 11:30:43
Michael, are there any other source of light other than those two side lamp (and candles) seen on this video? Your subject and BG are so brightly lit! Also I thought Sony A7s has native ISO 3200 for video but you said this was recorded ISO 800? Did I miss something? Thanks for sharing

Scott R

20.07.2014 20:31:11
You always have the most stunningly beautiful women in your videos.  That's good for you, because I have to watch everything at least twice, once for the girl and once for the information.  :)

Thanks for doing these reviews and comparisons.

KCH

30.10.2014 4:21:37
huge thank you finaly someone pulling 4k out of a7s

Tony Zecchinelli

24.11.2014 11:34:04
it is very hard to make a comparison because it  due on the way you impost the cameras it depends on the white balance setting if you made it manually or automatic  it depends on the color depth you set - on the contrast you set - well if you make it automatically  in both camera ok you can make comparison but nobody in the professional video world works in automatic setting way but always in manual way so the comparison is not possible .I mean about contrast colours and so on 

Jeffrey Boot

03.09.2014 8:59:24
the models hair and makeup looks great, room colours look good too, shame about the white balance
thanks

Victor “Bigsexy” Oliveira

19.07.2014 19:39:33
Whoa that room is on fire and I'm not talking , great video can't wait for the full head to head review.

WKil86

13.08.2014 7:11:26
What lenses are you using?

Gabriel Videos

22.07.2014 3:32:21
I still think that bigger sensor is better. Im starting to like the a7 more now, but I would wait for the next model since there is always updates to the first version.

kikojiu

31.07.2014 10:32:06
Hi Michael:

This is the very first test I had to watch several times to clearly see it. I kept being distracted by the model :-)

Nathan Thompson

18.08.2014 16:34:32
Ouch the highlight in the A7s is way too harsh! GH4 looks much better in comparison with much more gentle approach and you can edit later to add more colours and still looks great.

Asadian Belifont

20.07.2014 10:52:43
WOW!! She is one of the most gorgeous women I have ver seen. She looks great in any resolution for sure

CinemaEnthusiast93

20.07.2014 18:05:09
Did you happen to set the sony to the slog-2 gamma? I feel that would show the true power and versatility of the a7s. I mean 15.3 stops of dynamic range is a pretty serious improvement for a camera of this size and category. Correct me if i'm wrong.

Gabriel Videos

22.07.2014 3:29:50
it looks to me that a7 looks better. it actually is a good example because even though we may obtain better image out of the camera, the end result is posted in youtube so looking at the compressed youtube is the best reference.

Nazif Mahbub

23.07.2014 6:35:29
I love u Michael! I REALLY DO! You crash course should receive ACADEMY AWARD! :D

dajudgementday

19.07.2014 23:22:17
DAMN WISH I WAS IN THAT BEDROOM !

lifeline cole (7lifeline)

20.07.2014 4:28:27
Please if you don't mind do a test in s-log. the gh4 has a very narrow dynamic range which gives it it's distinct video look. But you must have not used s-log and dialed in proper PP adjustments to exploit the A7S wide dynamic range. This video is showing the gh4 having more dynamic range and everyone knows its not so. Please can you let us know which PP you used for this test? 

VideoCast714

20.07.2014 0:50:35
the GH looks way better. Did you custom white balance both cameras for the same light? The sony looks a lot more saturated but thats nothing cant be added to the GH in post. The GH looks like it has more of a Dynamic Range in color. The sony renders the white bed sheet the wrong color (as if WB was set to tungsten or something like that) thus why I was asking about a proper white balance being set ahead of time.

ucheucheuche

19.07.2014 23:00:50
These are nice comparisons but there's really no need to invest in 4k cameras at the moment while most footage is watched at 1080p on highest quality screens. When 4k becomes the standard consumer definition, cameras should've improved by then.

SomeLittleShoe

20.07.2014 0:31:55
There is a clear difference. I am pleasantly surprised at how good the GH4 looks!!! Now, it's making look forward to the what the GH4 will do with the Atomos Shogun 4K recorder.
I'm looking forward to the next clips. :-)

Glo Digital Studio

14.08.2014 19:33:54
using same iso and fstop not going to give proper output isn't you have to do the math and according to sensor size isn't? Tony Northrup made a video regarding that.

Eric Williams

20.07.2014 9:42:30
@michaelthementor what external recorder did you use this test should not even be possible. The Atomos Shogun has not been released yet unless you have an early model? Were you using an AJA recorder? The color profiles and white balance were not inline with each other need a better comparison.

AxeMann101

20.07.2014 3:01:32
I managed to download the 4K version with 4K downloader (google it)
Anyway the detail on the wood grain floor look more defined on the a7s as well as other areas, however other parts of the , also the a7s has a distinct yellow look to it.
If it came to
As a side note I have seen many 8 bit 4K clips (also downloaded in 4K) that look a lot more detailed and sharper than this (even at 800 ISO) I dont know what settings you are using or how you focused it, but it doesn't seem as good as other clips I have seen.
Maybe do another test.

JAlanEditor

20.07.2014 0:57:23
Thanks for the comparison. l would also like to see a comparison of GH-4 to A7S (4K HDMI out) looking at rolling shutter.

Shynn Ng

19.07.2014 21:41:44
a7s looks better from wat i see. but waiting for the full review :D

MichaelTheMentor

19.07.2014 3:54:25
Here is a side by side comparison of the GH4 at 4K (10bit) vs A7s at 4K (8bit). There are some problems and erros with the footage from a technical perspective, but Ill get better. I have more clips coming- Enjoy!


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