Welcome to our community

Be a part of something great, join today!

Register Log in
  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Do you shoot in 4k 16x9 or 4k 2:1?

4K HD

Good shooting and best regards,

Leo
 
4k 16x9. Gives you more to work with down the line. What you are going to finish to will influence your choice. hd greatly increases render times.
 
At PlasterCITY, we have experienced 2 major advantages for shooting 4KHD over 4K16:9 when you are planning for a 1080p delivery:
First, the transcode times decrease by a significant margin. Depending on the speed of your machine, debayering tool and/or network capacity, the ability to process dailies can be improved by up to 35%.
Second, the perceptible sharpness of 4KHD is actually sharper than 4K 16:9 (again, when processing out for 1080p delivery).
The simple reason for this is the even divisibility of the originator raster size by 1920x1080. When debayering & scaling of 4K16:9 media, partial pixels appear "softer" than when the divisibility is whole. Eliminating the 46.875% scale (1920 divided by 4096) can eliminate a small amount of perceptible softening resulting from the leftover fractions.
The result, 4KHD is the best all-around shooting mode for television HD, BluRay & online delivery. The biggest trade-off is partial loss of the censor when shooting.
 
4k 16x9 redcode 28 is available with 8gig CF.
 
Peter Strietmann said:
4k 16x9. Gives you more to work with down the line. What you are going to finish to will influence your choice. hd greatly increases render times.
Click to expand...

Did you mean to say that HD greatly reduces render times?

Good shooting and best regards,

Leo
 
Michael_PlasterCITY said:
At PlasterCITY, we have experienced 2 major advantages for shooting 4KHD over 4K16:9 when you are planning for a 1080p delivery:
First, the transcode times decrease by a significant margin. Depending on the speed of your machine, debayering tool and/or network capacity, the ability to process dailies can be improved by up to 35%.
Second, the perceptible sharpness of 4KHD is actually sharper than 4K 16:9 (again, when processing out for 1080p delivery).
The simple reason for this is the even divisibility of the originator raster size by 1920x1080. When debayering & scaling of 4K16:9 media, partial pixels appear "softer" than when the divisibility is whole. Eliminating the 46.875% scale (1920 divided by 4096) can eliminate a small amount of perceptible softening resulting from the leftover fractions.
The result, 4KHD is the best all-around shooting mode for television HD, BluRay & online delivery. The biggest trade-off is partial loss of the censor when shooting.
Click to expand...


Good Post. Thanks.

Hans
 
Michael, just wanted to say I'm glad to see your posting here more. Your advice is always well appreciated :)
 
4K HD is nice if you want to dump directly to 1080p. Even though most of my intended delivery formats now are 1080 HD or some derivative of that, I always shoot 4K 16:9 when I can as it just gives the largest image area to work with. It's always nice to have that extra little bit for stabilizing and re-framing to work with.

All depends on your needs. For brute force, maximizing transcode times and going direct to HD delivery, 4K HD is perfect.
 
Are you guys using L&T and Color? I have not done much testing (or many RED projects that didn't run through RED Rushes or Cine) since the holiday, but I just shot one using 4K HD and it did odd things using L&T.

When it brought the files in, they say they are 1920 x 1080. Is this correct? I definitely had the plugin set to "Native" in L&T. Pre-holiday, I thought they came in as 2k files, but that was probably using 4K 16 x 9 or 4K 2:1.

The other thing is they weren't reading as RAW. Though the files themselves said "Redcode," when I brought to a sequence and said "yes-match the seq to the clip," the sequence was 1920 x 1080, Prorez422HQ. So...something is up. Any ideas? Maybe I need to reload the L&T plugin, but wanted to make sure this wasn't some bug with using 4K HD.

Thanks.

Kevin
 
Michael_PlasterCITY said:
At PlasterCITY, we have experienced 2 major advantages for shooting 4KHD over 4K16:9 when you are planning for a 1080p delivery:
First, the transcode times ......
Click to expand...

what he said.
We also find 4KHD the preferred format since most of our work ultimately goes to 1080P
 
sorry, i'm a little lost here. what is HD? isn't HD = 16x9? is 4kHD the same as 4k2:1?
 
Kevin Wild said:
Are you guys using L&T and Color? I have not done much testing (or many RED projects that didn't run through RED Rushes or Cine) since the holiday, but I just shot one using 4K HD and it did odd things using L&T.

When it brought the files in, they say they are 1920 x 1080. Is this correct? I definitely had the plugin set to "Native" in L&T. Pre-holiday, I thought they came in as 2k files, but that was probably using 4K 16 x 9 or 4K 2:1.

The other thing is they weren't reading as RAW. Though the files themselves said "Redcode," when I brought to a sequence and said "yes-match the seq to the clip," the sequence was 1920 x 1080, Prorez422HQ. So...something is up. Any ideas? Maybe I need to reload the L&T plugin, but wanted to make sure this wasn't some bug with using 4K HD.

Thanks.

Kevin
Click to expand...

Yes, that's correct because it is halving the resolution. It is expected that you will finish in 1920x1080. Otherwise, you would have shot 4K full frame in which case halving it would have ended up with 2K in L+T. The whole point of 4KHD is that you will downconvert nicely to 1080P.
 
Has anyone shot 4K HD and seen the results for a 'film out' delivery? Just wondering how noticeable the difference between 4K HD and 4K 16:9 is for material primarily shot for 1080p--can it possibly be used / has it been used, for theatre projection?
 
humm.
 
haven't tried it/seen it, but It should be fine for film out. we're still talking 4 TIMES hd resolution. The only real down side of 4k HD is you lose part of the sensor. Not a big deal, but if you want really shallow DoF, or the widest end of the lens, full sensor 4k will provide better than 4k HD.

4k HD:
pro: Faster renders
con: Longer FoV, larger DoF, little less res

4k 16x9:
pro: Wider FoV, shallower DoF, little more res
con: Slower renders
 
You must log in or register to reply here.
Back
Top