Cousin David has a parrot. He titled the shot – ‘Salad bar’ – get it? The ISO was 2500. I don’t see too much noise. I sized up the image in Photoshop and it still looks pretty good. The trade off is shutter speed and sharpness versus noise from high ISO. If you dial down the shutter speed the ISO will drop but the slower shutter speed may show more motion blur in your subject. Once upon a time these options were not available when ISO was fixed to the film emulsion in your camera. Now it’s another variable to consider. Choose wisely.