I'm quoting for agreement, this function is most valuable when used the right way I think. May times when I think my people aren't sitting quite right, I'll do this>
1. Merge and flatten all current layers with ctrl - shift - alt - F
2. open an image from my inspiration folder that I think has some nice tones
3. Gaussian blur my inspiration image beyond recognition
4. Apply the match color effect to the flattened layer
5. Play with blending and opacity settings as desired
6. When used as a blunt tool like Corey mentioned, it's a terrible filter, But sometimes it can be a great time saver.
Alternatively, when I'm not feeling so hot on some inspiration image.. I'll paint the lighting for each person, but rather fast. Generally I'll spend 30 min painting in some evenly lit people with the following method if I'm feeling up to the task:
1. Have all people on a ctrl-click easy selection in photoshop
2. In general the ideas is to go to each person and dial in lighting in photoshop with a top lighting layer and a lower contact shadow later
3. I tend to adjust the tones on top of the person before adjusting a 'master' layer below them that has contact shadows.
4. Take a step back and 'see' every person in the scene, start with the person that stands out most. Delete them Joking.. You can make most people work I think as long as they are evenly lit.
5. Side note, if you render you people into the max scene, as look at me camera planes, make sure to have them as a select-able multimatte that you can seperate into separate selections
6. Select your first person(s) with ctrl click layer bounds in PS
7. Sample your colors for darkish tones and light tones (never use black and white). I generally use the eye dropper alt shortcut to sample a darkish blue and brightish orange/yellow from my scene.
8. ctrl click the later of your first people you want to adjust
9. set your over top layer to overlay and start painting with 1-10% opacity with a soft brush to tune in brights and darks depending on where you light source is on TOP of all the people layers individually, *use cliping masks if you get tired of making masks for each set of people.
10: hint, use a wacom pressure sensitive device or use shift-[ or ] to adjust your sofness.
11. After painting to your desire, set the under layer contact shadow to multiply.
12. There are 2 layers of contact shadows you want to apply... those right next to their feet, and those that fade further away.. Use some distinction.. sometimes I brush in the immediate contact shadows, and sometimes I use the quick shortcut to (g) to use a circular gradient for the 'further away' at around 10% opacity at a time. remembering to use blues and warm tones instead of white/black.
13. People matter and it's best to get a couple right than add to many that stand out as eyesores (*in my opinion). So take your time.
14. Once you get it dialed in this should take about 30 min, unless you are doing a stadium, or huge public space... then I would suggest something like MIR did for the french soccer stadium... or similar...
14. Share some of your renderings, I know we would all love to see what your up to and it might help give some better direction.
Cheers,
M-