Color correct only a portion of a clip?

Greetings and thanks in advance for replies to my first post. If this is covered elsewhere, please point me to an appropriate thread.

I'm new to Da Vinci Resolve 18.1.14, but experienced with other pro video editors.

A 4K stock clip purchased from iStock needs subtle color correction in a specific area — not the entire scene. I need to deemphasize a slight lens flare red shift on the original footage. Ideally, the area to be corrected can have a feathered or soft edge so that the correction blends in seamlessly.

Any tips? I'm studying chapter 122 in the user guide, but can't seem to find a solution. Maybe I'm just exhausted from a crazy production schedule... heh. Thanks again.

Color grading in DR can be keyframed here:

Bildschirmfoto 2023-03-30 um 10.36.56.png (127.87 KiB) Viewed 1106 times

A 4K stock clip purchased from iStock needs subtle color correction in a specific area — not the entire scene. I need to deemphasize a slight lens flare red shift on the original footage. Ideally, the area to be corrected can have a feathered or soft edge so that the correction blends in seamlessly.

Can you post a still of the shot? We might be able to give you some specific advice.

If just the red is bothering you, then I'd consider maybe a soft power window and a Red secondary curve, and then knock it down just in that area. Then you could also use keyframes to help bring the correction in or out as needed, if the rest of the shot is OK.

lensflare-mountains.png (825.23 KiB) Viewed 940 times

If just the red is bothering you, then I'd consider maybe a soft power window and a Red secondary curve, and then knock it down just in that area. Then you could also use keyframes to help bring the correction in or out as needed, if the rest of the shot is OK.

Thanks Marc!

Here's a reduced screen shot. Problem area is roughly oval shaped to the left of the yellow arrow I added... base of the tall mountain, mostly on the smaller right peak.

Meanwhile, I'll work with your suggestion and report back. The rest of this drone shot is fine... it's an ultra slow zoom toward the building, about 15 seconds.

Hey

Ideally, I'd immediately try to do as Marc wrote, thus us a power window to get the right selection back and softly modify its grade... This would allow the soft edge finesse (inside or outside or both).
Now, as you write about a lens flare, this may be tricky to get the selection back (I mean, of the flares and its components only), so depending on what's shot in its BG, I'd probably also try to use a luma keyer to kind of get back the lens flares area only...

Edit : Aaahhh, didn't see you screenshot when I wrote.
It looks like it will be easy enough at the end of the day. Even an rough power windows inside which you use an HSL eyedropper should let you get your selection.

If I understand the question, this is called a Secondary Correction.

It is covered in the Beginner's Guide.

https://www.blackmagicdesign.com/produc ... ning#books

Thanks much Sam and Jim!

Since I'm a newbie on this forum, my Posts still need to be approved by an admin — so there's a reply delay. I'll work the issue and post back. Appreciate your replies.

If I understand what you want, you want to remove the red tint of the right side of the mountain and make it all look more like stone? Something like this:



For me, this required a hand-drawn mask just over that specific area, plus a soft qualification of that specific color and grayscale value, then knocking down the saturation and the gain a little bit. I think it's close enough for government work, but it would work better with a much higher-quality still, since we'd have greater size and more bit-depth to work with.

Just a quick note to thank everyone for your tips and comments. Here's the finished video...