I just took 1500 images of our school play, about 1000 with my 1D MK IV, and 500 with my D800. I try to average 1 minute each. I first weed out all oof and obviously poor images, I use lightroom to adjust batches of similar images with the same settings, and every trick possible that I know to cut the tie down, My new D800 is going to be a problem, its takes 5 to 10 seconds for the image to render, and up to 30 seconds for NR to finish. I've done all but about 400 of the D800 images, and will spend another 8-16 hours on them.