Changing your picture style will make a massive difference to the final picture detail, colour and overall quality, if you're shooting on the likes of a then you'll probably already know this as you will most likely be shooting in Wide Dynamic Range or C-Log. If you shoot on a Canon DSLR (5Dmkii, 5D mkiii, 60D, 70D 6D etc) then setting your picture style could be the most inexpensive way to improve your videos & films. To understand why, you've simply got to understand that camera sensors capture video in the most efficient way possible, this means crushing the shaded areas into black and raising the lighter areas into white.
This is why the 'straight out the camera' look can be quite reminiscent of a video camera. There's nothing cinematic about it. Crushing those blacks and raising those whites means less information to throw through the sensor, the buffer and onto the card. There's lots of pre-sets of picture style on your camera (standard, faithful, monochrome etc) all of whos settings you can tweak, but there will also normally be 1-3 user definable functions. Take one of these programmable slots and slap these settings on it. What does this all mean?
Canon Picture Style Vintage Look
I'm glad you've asked - Saving this pixel information that normally would have been thrown away means that you have more room to play in post production. If you make any exposure or colour changes in, (or whatever you use) then if the shadows are already black, there's no information to raise from them, if the highlights are blown then there's no information to bring down. Also, if you colour grade your footage then the more information you have the better. If there's no colour information to change then what results can you possibly expect? Take those same screen shots of footage as above and colour grade them and see the difference.
Picture Style Vintage Canon Download
Everyone should have a preferred set of Picture Styles that they use on jobs other than the stock standard in camera ones supplied by Canon. Push your camera's sensor to the limit, don't let it throw away ANY of that detail What is picture style anyway? And how can it improve my video project?
Vintage Look Picture Frames
Lumetri colour applied in Adobe Premiere Pro CC.