Sony PMW-F3 - Highlight Edge Fringing

[giodashorts]

I've been testing out the camera and recording out to ProRes via 3G SDI in the 3G RGB 444 S-Log mode. I've tried changing the settings, going out from the other SDI out, using the 1.5G YCbCr 422  setting, changing the PsF to 59.94i for pull-down, but nothing has changed this.

The artifact is much more noticeable when it appears at hard edges between bright and dark—in the images, you'll notice it appears either black, green, or "cyan". It doesn't seem to go away, which is a pity because it is a very noticeable "digital" artifact in an otherwise strong image—with the acceptation of a bit of colored aliasing appearing on certain patterns.

I'm going to have to assume that this is what the camera is like and that there isn't a way to avoid it, but I wanted to seek confirmation on the matter from other F3 users on this forum. 

Here are some still images including the artifacts—all are, with one exception, “graded” from the S-Log, and therefore making the artifact more noticeable:

https://images2.imgbox.com/61/76/yC6p69Ur_o.png

https://images2.imgbox.com/cf/1a/ol6AkhUj_o.png

https://images2.imgbox.com/4e/31/UKgHWDR2_o.png

https://images2.imgbox.com/b0/ea/XHeIRzlc_o.png

https://images2.imgbox.com/40/63/8PXd9KCn_o.png

[IronFilm]

Sure this is not the lens? That would by my assumption

[giodashorts]

No, it's not the lens. I've compared the images with it and another camera (JVC LS300), and it doesn't occur on that one. It's a tough one. The firmware on the camera is 1.31, so it's not been updated to the last firmware update. This one doesn't have the option of choosing S-Log on the Picture Profiles menu. I think I should probably update it, but I'm not sure it'll make a difference. Does updating the firmware via SxS affect the RGB 444 installed on the camera?

[IronFilm]

14 minutes ago, giodashorts said:

No, it's not the lens. I've compared the images with it and another camera (JVC LS300), and it doesn't occur on that one.

Using the same lens on both? Have you swapped around to try a few other lenses on the F3 as well?

 

[hmcindie]

The first Sony A7s had these artifacts in it's 1080p mode. Black lines against big contrast & white. It looked shit (and no reviews ever seemed to mention it). There was a previous Sony camera that also had those and supposedly fixed by a firmware update (read about that 4 years ago in some forum). It was a Sony thing, atleast a couple of models back.

Do the sharpening settings affect it?

[IronFilm]

16 minutes ago, giodashorts said:

Does updating the firmware via SxS affect the RGB 444 installed on the camera?

It shouldn't remove it. But if you're paranoid about it then you could offload the installed RGB from the F3, do the update, then reinstall the RGB

[giodashorts]

7 hours ago, IronFilm said:

Using the same lens on both? Have you swapped around to try a few other lenses on the F3 as well?

 

Yes, the same lens on both.

7 hours ago, hmcindie said:

The first Sony A7s had these artifacts in it's 1080p mode. Black lines against big contrast & white. It looked shit (and no reviews ever seemed to mention it). There was a previous Sony camera that also had those and supposedly fixed by a firmware update (read about that 4 years ago in some forum). It was a Sony thing, atleast a couple of models back.

Do the sharpening settings affect it?

Yes, I think the sharpening settings would affect it. However, I'm in the S-Log mode via the Gamma select in the Video Set menu, so there is no way to adjust this. I believe all added sharpening would removed with this setting.