FS5: Sony FS5 Slow Motion Purple Artifacts
- Thread starter alex1
- Start date
alex1
You get that at 240fps and over. And in HD but apparently not in UHD.
I always shoot at either 50fps or 100fps and haven't noticed it.
Your purple fringing aliasing doesn't look as bad as others ive seen. Is it Slog3?
Check this:
https://vimeo.com/151920002
You get that at 240fps and over. And in HD but apparently not in UHD.
I always shoot at either 50fps or 100fps and haven't noticed it.
Your purple fringing aliasing doesn't look as bad as others ive seen. Is it Slog3?
Check this:
https://vimeo.com/151920002
I get it in slow-motion from 120/240 its only an issue in and around specular highlights but unfortunately for me I shoot motorsports so 99% of my work has specular highlights.
I bought a used FS700 for the slow-motion for this season
hope they fix it or someone comes out with something better, I think Im ready to look somewhere other than Sony for my next camerahttps://www.youtube.com/watch?v=Myj7wANnLCU
https://vimeo.com/77241637
FS700 had something similar if i remember correctly. It also had aliasing in high-contrast edges.
http://www.dvxuser.com/V6/archive/index.php/t-314950.html
The FS7 also has troubles with purple fringing in high contrast areas.
http://www.dvxuser.com/V6/showthread.php?339276-Sony-FS7-purple-fringing-any-fix/page4
Im looking at it from a shoot i did two days ago.
But i also recieved a Red Epic Dragon clip from a friend to test grading and if i liked it. Immediately noticed butt ugly pink fringing in high-contrast edge on the actors face and a backlight. But because of the REDRaw it was very easy to grade and mask out.
I guess what you are looking at, is the degrading of the image to create the slow motion, that in turn smashes the purple blobs to become bigger than they really are in clean mode?
FS700 had something similar if i remember correctly. It also had aliasing in high-contrast edges.
http://www.dvxuser.com/V6/archive/index.php/t-314950.html
The FS7 also has troubles with purple fringing in high contrast areas.
http://www.dvxuser.com/V6/showthread.php?339276-Sony-FS7-purple-fringing-any-fix/page4
Im looking at it from a shoot i did two days ago.
But i also recieved a Red Epic Dragon clip from a friend to test grading and if i liked it. Immediately noticed butt ugly pink fringing in high-contrast edge on the actors face and a backlight. But because of the REDRaw it was very easy to grade and mask out.
I guess what you are looking at, is the degrading of the image to create the slow motion, that in turn smashes the purple blobs to become bigger than they really are in clean mode?
Yes, but I feel like I got a generic answer and they did not really bother to look at the sample I sent.
Basically they said nothing can be done to fix it but will have less issues in 120 vs 240 (my samples were with both speeds and unfortunately look identical, the reason I down think they really read my email or watched the samples I sent)
Just and FYI I in no way ever expect super slow motion to look as good as regular 24-60fps and understand that aliasing and softening of the images is totally normal but dancing neon blocks and lines are way over the top... worse the a6300 has no such issues LOL
Basically they said nothing can be done to fix it but will have less issues in 120 vs 240 (my samples were with both speeds and unfortunately look identical, the reason I down think they really read my email or watched the samples I sent)
Just and FYI I in no way ever expect super slow motion to look as good as regular 24-60fps and understand that aliasing and softening of the images is totally normal but dancing neon blocks and lines are way over the top... worse the a6300 has no such issues LOL
SamEdwards
Well-known member
This is a great heads up. Have you tried shooting RAW?
snapdragon
Member
i've had it too (only in high contrast areas). I've seen it in 100/120fps footage too.
Very poor for a pro camera that Sony markets the super slowmo features so heavily.
The consumer laws in my country would allow me a refund for that issue (not fit for purpose). However I'm happy with the camera otherwise so I'm not going to kick up a stink about it.
Very poor for a pro camera that Sony markets the super slowmo features so heavily.
The consumer laws in my country would allow me a refund for that issue (not fit for purpose). However I'm happy with the camera otherwise so I'm not going to kick up a stink about it.
So Sad. I also wrote to sony about it got the reply that this is hardware related and not fixable (((
I actually bought the Odyssey 7Q RAW licenses and now have almost clean 1080p in Slog2 ProRes. But only because the RAW signal is 4K and the Odyssey is doing the downscaling job.
Another issue which I am still struggling with slow motion. In this mode the camera is forced to use some type of internal resolution conversion or pixel skipping readout because it can't output 4K RAW in 240p. The output in Slomo is then maximum 2K@240FPS and again has very ugly artefacts. This camera really has problems with internal resolution conversion!
I hope they are still working on it and will maybe provide a fix.
I also did a long post on the Sony community forum about this issue (with links to example screenshots):
http://community.sony.com/t5/FS7/FS5-artifacts-purple-grid-Sony-please-fix-this/m-p/596626#M8911
(((I actually bought the Odyssey 7Q RAW licenses and now have almost clean 1080p in Slog2 ProRes. But only because the RAW signal is 4K and the Odyssey is doing the downscaling job.
Another issue which I am still struggling with slow motion. In this mode the camera is forced to use some type of internal resolution conversion or pixel skipping readout because it can't output 4K RAW in 240p. The output in Slomo is then maximum 2K@240FPS and again has very ugly artefacts. This camera really has problems with internal resolution conversion!
I hope they are still working on it and will maybe provide a fix.
I also did a long post on the Sony community forum about this issue (with links to example screenshots):
http://community.sony.com/t5/FS7/FS5-artifacts-purple-grid-Sony-please-fix-this/m-p/596626#M8911