Colour correction

The screenshots below show my use of the RGB balance tool. 
The top photo is from my first filming shoot, and the bottom photo is from my second filming shoot. They are both similar shots of the same band member, however they are done weeks apart from each other. After uploading footage from my second shoot into FinalCutPro, I realised that my newer footage has a slight change in colour, especially after applying the same levels of desaturation and vignette effect.






The original footage I had filmed has a slight green tint to it, possibly to due to with the lighting at at the time combined with exposure levels used when filming, when I filmed for the second time I had changed the camera exposure which has possibly contributed to the colour change.
As I want to keep continuity throughout my video, I wanted to make sure that the colours stay consistent throughout all of my video. This meant using the RGB balance tool to try and match up the colours as closely as I could.

Before and after using RGB balance. 

By subtly reducing the red highlights in my new clips, as well as increasing the green highlights, I have been able to make my newer footage close enough as I can to my older footage.

Footage before colour correction. 

Footage after colour correction - also showing the RGB balance settings used. 

How my newer footage compares with my older footage. 

Here is another comparison of the two shots I had shown at the start of this post. The top screenshot is from my first filming session, and the bottom screenshot is from my second filming session.

By using the RGB balance, I have been able to closely match up the two shots with their colours. The areas that are most noticeable with the colour changes are the walls in the background, and my band members skin on his face and arm. Where the new shot used to have more of a red / pink tint to the background walls, and my band members skin, they have now been changed to have a slightly more green tint similar to the original footage.

As each clip is slightly different in the lighting and exposure used, using these same RGB balance settings used from the shot above may not work the same and will be effected differently. This will likely mean that I have to individually correct each clip as the settings may interact differently with the different clips.