5Dmk4 vs A6300 vs X-T2 vs GX85 (GH4) 4K Detail & Lowlight Comparison
- Thread starter John2016
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I saw this elsewhere and it was pointed out the other three don't have an ailiasing filter? Among other things.
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One of the reasons for my buying a 5DIV was that my 5Ds R occasionally gives Moire when
I am so close to birds that the feather barbs give some Moire. It's only happened a couple of times in 20,000. But, the incredibly sharp 400mm DO doesn't blur enough. Otherwise, the 5Ds R is stunning in terms of sharpness.
I am so close to birds that the feather barbs give some Moire. It's only happened a couple of times in 20,000. But, the incredibly sharp 400mm DO doesn't blur enough. Otherwise, the 5Ds R is stunning in terms of sharpness.
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I know nothing much about video, so apologies if this is a stupid question, but surely the AA filter works on too low a level to show up in video as softness? Given that video is already downsampled, or whatever the correct term is? Even 4K?
Like, if you took a photo with the 5Ds and the 5DsR, and downsampled them both to 4K resolution, any difference in 1:1 sharpness in the original images would be swamped by the reduction in output size? Am I missing something?
Like, if you took a photo with the 5Ds and the 5DsR, and downsampled them both to 4K resolution, any difference in 1:1 sharpness in the original images would be swamped by the reduction in output size? Am I missing something?
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davidj said:
Is that right? I thought it was a roughly 1.6x crop. 4096x2160=8.8MP. The 5D4's sensor is 30MP. Crop factor is a linear measure, right? So is the calculation not roughly ((√30MP)/1.6)²? Which is over 11MP. I'm not great at maths though :-\
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scyrene said:
You also have to take the aspect ratio difference into account, hence the 1.76x crop.
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I'm beginning to think that there is something in the setup that was missed. I find it really hard to believe the image can be that soft. Also, it could be a software issue between Canon files and editing software.
So many sample videos at 720P that's it's hard to really tell.
So many sample videos at 720P that's it's hard to really tell.
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Hi,
I think he should double check his settings or try using an EF lens to verified the result again.
Anyway, if I were a reviewer and I found some big issue with a high profile camera, I'll make sure I done all I can to verified the result include getting a 2nd unit or use other lens on it before I post the result... credibility is very importance and once lost, it hard to gain back.
Have a nice day.
I think he should double check his settings or try using an EF lens to verified the result again.
Anyway, if I were a reviewer and I found some big issue with a high profile camera, I'll make sure I done all I can to verified the result include getting a 2nd unit or use other lens on it before I post the result... credibility is very importance and once lost, it hard to gain back.
Have a nice day.
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pokerz said:
This is where I had concerns...since the 5D mark IV doesn't downsample the entire sensor...it seems to me like individual pixel sharpness would matter to a much greater degree than on competing cameras. If you get one pixel of blur on the 5D Mark IV that would show up...if you got it on a competing camera, it would potentially be masked out by the downsampling routine.
I don't know why Canon doesn't downsample and I'm not video expert...but it does bring into question if that's the best lens to use on the 5D.
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I went chasing Golden Eagles in the mountains yesterday. There was a young eagle hovering nearby. Then suddenly I saw a buzzard starting to skydive. The following 4 pics were taken at a distance of approx. 200 m just in the original size (just a 100% crop of 600x400 pixels - just to say, how small the bird on the original photo is! 
). I think it is still amazing to see how the skydive begins. And last two shots of the eagle as well. I am not sure about the last picture. Looks like the eagle has swallowed a ball... 
Maybe these are the remainings of a groundhog.
). I think it is still amazing to see how the skydive begins. And last two shots of the eagle as well. I am not sure about the last picture. Looks like the eagle has swallowed a ball... Maybe these are the remainings of a groundhog.Attachments
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