[OnePlus 7 Pro Themes, Apps, and Mods] TerrorByteX:
Alright, so I took a couple of pictures with a bunch of different cams.

The pictures are labeled as PixelOG for my Pixel 1, OP7PCam for the stock camera on the OnePlus7.

And then the GcamX pictures use the following preset files. Note I didn't use every preset every single time. Check the filename:

1 - OP7_Arnova_Beta_Xlib2_Fizwiz_4.1_ggg.xml

2 - SG ARG 1.1 (vivid) .xml

3 - Arnova_Pure_by_Nameless.xml

4 - [Xtreme] [Xcam 6 Beta 6] Vivid 190710.xml

5 - Default_OP7-7PRO.xml

6 - SamVivid.xml

All of the original pictures are here: https://drive.google.com/open?id=12-d_wbTNOf3WDIE6H4SIsGz_miOyllM3

The XMLs are here: https://drive.google.com/open?id=1D5Pb54cz-EfEvNTfMpKkWb0zs0Qyn6BL

My feedback/opinion:

Photo1: Just a few household items to see color reproduction/detail. For all pictures, I tapped on the blue mug to focus and then took the shot. No other adjustments. I would say differences in white balance between the pics is a combination of the xmls, cameras, and just a slightly different WB each time you tap.

- OnePlus 7 stock camera is definitely more cool than stock Pixel 1. I prefer the Pixel 'warmth'. The OP7 stock camera is also a little bit softer, maybe.

- Gcam1: At a glance it looks nice. But a bit oversaturated. The mug is not that blue at all. It's a much duller color.

- GCam2/3/4: These all look so similar. If the focus is off on one of them it's just the shot, not the XML.

- Gcam5/6: The saturation is just nuts. Gcam5 is a little better, but that mug is duller in real life. Nope.

Photo2: Second picture is outdoors, to see detail and HDR. Not only is it cloudy, it won't even stay cloudy. So the lighting outside is changing every minute. I might have to do this one again later.

- Pixel OG showing it's age here. The OP7 stock pictures are actually decent. Again the wide angle is softer and it's also a bit saturated, but looks good.

- For Gcam, same results. Gcam1 is trying too hard, Gcam 5/6 are ridiculous. All three of them take multiple shots every time, which I don't want anyways if I'm just shooting normally.

- Gcam2/3/4 very similar. The XMLs don't saturate as much, also it might have been just more drab during those shots.

Photo3: Testing out the night vision in the third picture:

- The Pixel 1 obviously can't keep up, but it gets everything but the blurryness right. Doesn't have that kind of OIS/EIS that the OP7 does.

- The OP7 stock app sucks here. Not accurate, and very noisy!

Photo4: Testing out zoom. This is more confirmation than anything else:

- Getting to use the OP7 zoom lens for that "10x" zoom is nice with the stock cam. It's a little washed out though. And I took a few shots here, that was the best one. I'm not rooted btw, so I don't have the other cams to use in Gcam yet.

Photo5: Testing out how well the cams/XMLs do with detail:

- Some interesting results here! The OP7 stock app handles the leaves on that green shrub/bush a lot better. The zoom is better of course, but even the main lens does better than Gcam. But, the stock app also overexposes slightly.

- The XMLs are all the same here as before.

So there you have it. First off, the OnePlus 7 Pro stock app... Honestly it does get it right and is better occasionally. Gets more detail sometimes (need to retest this) and sometimes it gets the white balance right too. But no focus tracking, night vision is worse, and there's a significant delay between hitting the button and it taking a picture.

As for the XMLs, definitely avoid the last two which are ridiculously oversaturated and slow because they take a million exposures every time. The first one is nice for a vivid touch, but it also takes multiple exposures FYI.

2/3/4 are very similar.

Right now I'm using 2 - SG ARG 1.1 (vivid) .xml.

I'd like to do some more testing later when it's more sunny as well. Want to see the HDR performance and further test the detail that the Gcam app does not seem to be picking up at times.

Also I just realized that I didn't have upload at original quality checked the whole time. But the pictures are extremely close in filesize, and spot checking a few of them, they look the same. Especially the last few detail shots on the shrub.