I shot video for a fashion shoot with kids and it was on a large cyc wall. Video wasnt the prority so i didnt get to light each scene perfectly not to mention kids were just going wild. also a bulb blew on the first day so a few shots from day 1 arent as pretty as day 2. Some background isn't 2 stops over the "talent" and the color temp on them was a little warmer on them.
so im trying to match up the backgrounds the best i can but when i change the background to match the kids kinda get "sickly looking" some times the back ground is like 3 stopsish over and some times its like a stop over the kids if that. Im also trying to keep the background detail and not blow it out.
another thing i found out is that zooming in to 35 on my 16-35L series is like 2 clicks of the down on the 16. (the 2.8 of the 35 lets in the same light as a 3.5 at 16). I always knew there was a little light loss but In most senerios this slight loss of light never caused much harm but with a white background its alot more noticeable.
any tips on fixing some of the less than perfect shots would be help full or creating a uniform background would be cool.
this post may sound like i have a disaster on my hands but its just a few shots that the background is grayer then i like and im just trying to figure out some color correction tips before my next cyc shoot where i'll have the proper lighting.
im using premiere cs6 have have speed grade.