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Old January 12th, 2022, 04:39 PM   #1
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Is Sony A7 IV or Canon R6 more video oriented?

Hi, I'd like to know your thoughts. Is the Canon R6 or Sony A7 IV more video roriented? I'd like to shoot at 4K 50p and I already know Canon R6 is better for it. BUT I don't want to know it, I'd like to know which of the two cameras is more video oriented.IAnyway I think Sony A7 IV can give better video quality (more detailed and better quality image) because it is newer. Canon is older. ;) What camera would you buy to make 4K documentaries? Thanks for your thoughts.
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Old January 13th, 2022, 07:23 PM   #2
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Re: Is Sony A7 IV or Canon R6 more video oriented?

The Sony A7IV is better for video:
+ no record time limitations
+ never overheats
+ more lens choices, third party options
- crops 4k60

Canon R6
- 30min record limit
- over heating issues
- less lens choices and more expensive, no third party
+ no 4k60 crop

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Old January 14th, 2022, 07:08 AM   #3
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Re: Is Sony A7 IV or Canon R6 more video oriented?

Quote:
Originally Posted by Adriano Moroni View Post
Hi, I'd like to know your thoughts. Is the Canon R6 or Sony A7 IV more video-oriented? I'd like to shoot at 4K 50p...
I ended up going with the a7iv as that's exactly what I want, a suitable 50p camera. A couple of 50p samples here in both HD and 4K 50p.

Chris Young

HD 50p

4K50p

Last edited by Christopher Young; January 14th, 2022 at 07:42 AM.
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Old January 14th, 2022, 08:18 AM   #4
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Re: Is Sony A7 IV or Canon R6 more video oriented?

Hello Chris,
thank you so much for your message. i enjoyed watching your videos. Could I ask you some questions please?

Do you also like to shoot at 4K 50p? A lot of people are teasing me about it. jajajaaja To be honest I like to shoot at 50p rather than 25p for my videos.

I always go to hot countries to shoot documentaries. Do you think I will have some problems with the overheating of the camera?

I have a lot of old card that I used with the GH5 and now I no longer have it. Could you tell me if I can also use them with Sony A7 IV? Someone told me I could do it, but with a low bitrate. But do I have to shoot with such a low a bitrate that can degrade the quality of my clips? I DO NOT take photos but only videos in 4K.
I attach a pic of the Sony cards.
Thanks for your info!
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Old January 14th, 2022, 01:52 PM   #5
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Re: Is Sony A7 IV or Canon R6 more video oriented?

You'll want faster UHS II cards (300MB/s), if not CFxpress cards, especially if you want to shoot 4k/50p. You can always try one of your old 95MB/s cards, but unlikely they'll sustain the data rates for 4k/50p.
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Old January 14th, 2022, 10:51 PM   #6
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Re: Is Sony A7 IV or Canon R6 more video oriented?

Quote:
Originally Posted by Adriano Moroni View Post
Do you also like to shoot at 4K 50p? A lot of people are teasing me about it. jajajaaja To be honest I like to shoot at 50p rather than 25p for my videos.
I prefer to shoot 50p in either HD or 4K as I can always bring it back to 25p. Plus if I need 50% slow-mo that is easily created from 50p.

Quote:
Originally Posted by Adriano Moroni View Post
I always go to hot countries to shoot documentaries. Do you think I will have some problems with the overheating of the camera?
So far I have run the a7iv without stopping for 3 hours and 22mins using an internal battery and with an external USB-C power supply connected. Using a dummy battery the camera runs cooler. The camera has never got to "hot". It gets warm but not uncomfortably warm to touch or hold. This 3 hour plus recording was at 22 degrees Celcius temperature. Never had a temperature warning but I do have the warning setting in the menu set to 'high'. I really don't think overheating would be an issue unless the camera is in direct sun and you are shooting at the highest bit rates. But then if I'm shooting like that with any type of camera the camera is shielded from the direct sun, broadcast or otherwise when running for a long time.

Quote:
Originally Posted by Adriano Moroni View Post
I have a lot of old card that I used with the GH5 and now I no longer have it. Could you tell me if I can also use them with Sony A7 IV? Someone told me I could do it, but with a low bitrate. But do I have to shoot with such a low a bitrate that can degrade the quality of my clips? I DO NOT take photos but only videos in 4K.
I attach a pic of the Sony cards.
All the videos you have watched, both HD and 4K were all shot using the XAVC-S 422 10-bit codec which is Sony's 200Mbps Long GOP codec. They were all shot on SanDisk Extreme 90MB/s U3 class 10 cards. Slightly lower rating than your Sony 95MB/s cards. At 200Mbps that's equivalent to 25MB/s so that's well inside the minimum continuous data rate of a high-quality brand name 95MB/s card. If you want to shoot XAVC-I at 500/600Mbps then you will need V90 rated cards. If you are going to use S&Q at up to 60p then you will need CFExpress cards as the bit rate there is up to 1200Mbps. It's all clearly outlined in the a7iv/a7Siii XAVC spec sheets.

For years I have worked in broadcast and the main production bit rate used nearly everywhere was 50Mbps. Do you ever watch F1 racing in Europe in 4K? That is generally coming from a 200Mbps video production pipeline and is broadcast live in most parts of the world at 35-40Mbps on DVB-T2 at 3840 2160p at 50 or 59.94 frame/s, HEVC encoded at (mostly) 8 bit/px or sometimes at10 bit/px. Does it look high quality? Yes, it does. High bit rates are only a part of maintaining picture quality. Don't get carried away by massive bit rates. I-Frame is easier to edit but has a much higher data load with its higher bit rates, therefore, necessitating faster cards. It will also chew up a lot more space. Your choice. The question is "Do I really need that high bit rate?". I don't think so. That's based on having shot doco series for TV at anywhere between 50 and 200Mbps.

Chris Young
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Old January 15th, 2022, 03:23 AM   #7
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Re: Is Sony A7 IV or Canon R6 more video oriented?

Wonderful detailed reply. I thank you so much. You have reassured me in no small measure.
Let me ask you one last question since you are very experienced and use the Sony A7 IV. I have been using the Lumiza GH5 in recent times, but have now sold it, along with its kit. Now I should buy a new camera and I'm thinking of buying the Sony A7 IV. It seems like the perfect camera for me but I don't like 2 things about it:

1) I never use tripods or gimbals in my documentaries and never will. I shoot everything freehand. The Lumix GH5 gave me great reassurance of stability. Sony unfortunately doesn't perform as well as the GH5 and if you want good stability you have to deal with the clips in a rather cumbersome way in post production. I like more simple and immediate things. ;)
Do you think I can get on well with this Sony in terms of stabilisation.

2) Shooting in 4K 50P there is a "crop". Have you ever noticed a slight loss of image quality in the video? I already know about the focal length difference, but I don't mean that, just the quality. Although I will only have ONE zoom lens with me (Sony SEL 24-105mm f/4 G OSS), but that wouldn't be the problem.
Thanks again.
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Old January 15th, 2022, 08:31 PM   #8
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Re: Is Sony A7 IV or Canon R6 more video oriented?

Adriano.

Shooting in 50/60p crop is still giving a 4.6K oversample. Comparing shooting in FF and crop means a difference in oversampling between 7K and 4.6K. Visually on a 60" screen, I cannot see any difference. If I have to struggle to see a difference between the crop and FF image it's of no concern to me. The 4.6 oversampled image is well ahead in image IQ of the following cameras I have owned and currently own and in some cases have worked with on various projects. They are the FS7, F5, F55, Varicam LT and Canon C300MkII. Effectively the 4.6 image is approx 14.6 megapixels. All the above cameras are effectively 11 Megapixel cameras in Super35 mode. When it comes to signal to noise ratio and just visual noise observations the a7iv is well ahead of all the cameras above. Also in direct comparison to the Sony a7Siii between 3200 ISO and 12800 ISO I have found the camera to have better fine detail resolution and a quieter image. Even in crop mode against the 12 Megapixel of the a7Siii. This is probably down to the 4.6 oversampling. Oversampling does reduce noise levels. All of the above cameras in S35 in 4K have no oversampling. The a7Siii, which was high on my list also has no oversampling.

Probably the biggest thing to be held against the a7iv is that it has a FF rolling shutter of 26.8 ms. The Canon R6 for example is running out at 30.6 ms. In crop mode, the a7iv is running out at 12.8 ms which is actually better than the Sony FS7 and F5. Anything below 14 ms has never been a problem for me shooting motorsport, football or dance. Do you hear a massive amount of talk about rolling shutter problems with the Canon R6 or the Panasonic S1 series? Not really. The a7iv is in the same category of rolling shutter as those cameras in FF mode.

When it comes to IS then yes the GH5 has been one of the benchmarks. In my experience, none of the FF cameras is as good as the Panasonic M4/3 sensor for stabilization. That being said if you use a Sony or Tamron lens with stabilization in conjunction with the in-body stabilization of the a7iv the camera is very useable handheld. The second video I listed is an all HD handheld example of the combined IS of both the camera body and the lens. Even with my non-IS manual lenses, I get pretty decent results using just the five-axis in-body IS. Good enough that no client or network has ever mentioned camera movement or stability.

Chris Young
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