Different sizes between VRIMGs - manually saved from VFB vs save after render

[Vizioen]

I've noticed this for a while now, but is there a reason that the vrimgs, saved after render completion (set up from the render settings dialogue), are smaller than the SAME render saved from within the VFB (save all image channels to single file).

See below, as you can see the one that is saved after render completion is about 200 MB smaller than the one saved manually from the VFB. There were NO changes to anything, this is the exact same vrimg with the exact same information to my knowledge.



Reproduce:

- Save a render by using the render settings dialogue for saving the RAW image file (use VRIMG)
- Open that render with the VFB (Load image)
- Save that render without changing anything (Save all image channels to single file, choose VRIMG)
- Compare the file sizes

[Pixelcon]

Does one have the additional denoiser utility passes included?

[Vizioen]

Does one have the additional denoiser utility passes included?

No I always render without denoiser, don't like the look of it.

There must be a difference in the way it's being saved. I just did another test:

- Took the first image that was in my history and loaded it in my VFB (AUTOSAVE VFB)
- Didn't do anything but click the green plus icon on the top of the history, effectively just duplicating it
- The result is a few KB difference (smaller) as well (DUPLICATE FROM VFB)
- Saved it (all channels to single file) > +/- 200 MB bigger (SAVE FROM VFB)
- Compared the file size the VRIMG that was saved after the render was finished (ORIGINAL), and this one is the smallest of them all.



That's 4 different filesize for the same RAW image.

[hermit.crab]

Troubleshooting it.
Regarding the difference in size of the VFB History, it is probably this.

[Vizioen]

Troubleshooting it.
Regarding the difference in size of the VFB History, it is probably this.

Thx Aleksander, that's probably it, any reason why it's not saved universally the same? 200 MB is quite a lot of difference.

[hermit.crab]

Thx Aleksander, that's probably it, any reason why it's not saved universally the same? 200 MB is quite a lot of difference.

It turns out the "Save VFB color corrections to RGB channel" option is always active when saving through the VFB, which in turn creates a corrected RGB and an internal (hidden) non-corrected RGB channel. The excess file size is from this channel.

[Vizioen]

It turns out the "Save VFB color corrections to RGB channel" option is always active when saving through the VFB, which in turn creates a corrected RGB and an internal (hidden) non-corrected RGB channel. The excess file size is from this channel.

OK thanks for the info Aleksandar