Spotted this for anyone interested: https://vimeo.com/174166088
FS5: UHD downscaled to HD
- Thread starter Ivor C
- Start date
Nirv
Carbonite Member
I much prefer the downsize from UHD to HD in Post than shooting HD in the FS7. Comparing them side to side the downscaled UHD is more pleasing to the eye and retains the 3D pop of the images that shooting internal HD seems to take the edge off. Adding the tiniest smidgeon of Unsharp Mask sharpening to the UHD video prior to downscaling can help retain the 3D pop by stopping the downsize algorithm averaging out your in focus detail. It's a shame the internal HD doesn't look this good.
There are several methods of filtering the image during downscaling that can affect the overall sharpness of the image so the exact results people get will have some software induced variability. It's all subtle stuff and dipping into pixel peeping territory but a good observation.
There are several methods of filtering the image during downscaling that can affect the overall sharpness of the image so the exact results people get will have some software induced variability. It's all subtle stuff and dipping into pixel peeping territory but a good observation.
SamEdwards
Well-known member
The in-camera 1080p looks sharpened, but not actually sharper. The difference is subtle, though.
SamEdwards
Well-known member
The enhanced edges in the in-camera version will give you trouble in post. A big no no for VFX.
Mitch Gross
Veteran
This can be done on ingest of the media from the camera into the Odyssey7Q+. Send in 4K, Supersample to 2K/HD and record.
SamEdwards
Well-known member
It's always best to gather as much data when shooting as you can. It can save your butt in post.
Thanks for the share Ivor, i shot this little test in prep for owning the Odyssey, i am really impressed with the internal HD, expectations are not exactly high for a 50 Mbit codec but XAVC is pretty smart and being Long-Gop it's actually a reasonable rate.
I found the internal HD to experience a micro contrast boost, you can see it happen in the video, the camera never moved, the focus on my lens didn't change (GL - 18-35) but when you switch over you feel this jump in the image. The telling areas are in colour fringing around the Avatar text and the lack of resolving detail in the credits of the Blu-Ray cover, you can see the internal HD struggle with fine detail, in a odd way the UHD downscale feels softer while obviously retaining a little more detail which must simply be the downscale process.
It is a lot of work to go through and double the storage and for me would be dismissed on this little camera but with the 7Q+ you can achieve this result from the HDMI UHD output and achieve higher bit depth and sub sampling from the 4K FS-Raw output for essentially the same data load when debayering to 2K prores, i just need to test the best practice for Linear raw.
I found the internal HD to experience a micro contrast boost, you can see it happen in the video, the camera never moved, the focus on my lens didn't change (GL - 18-35) but when you switch over you feel this jump in the image. The telling areas are in colour fringing around the Avatar text and the lack of resolving detail in the credits of the Blu-Ray cover, you can see the internal HD struggle with fine detail, in a odd way the UHD downscale feels softer while obviously retaining a little more detail which must simply be the downscale process.
It is a lot of work to go through and double the storage and for me would be dismissed on this little camera but with the 7Q+ you can achieve this result from the HDMI UHD output and achieve higher bit depth and sub sampling from the 4K FS-Raw output for essentially the same data load when debayering to 2K prores, i just need to test the best practice for Linear raw.