6 Essential Camera Settings for Wildlife Photographers - Nature TTL
As a general rule of thumb, and in most circumstances, you'll want your shutter speed as high as possible, aperture as wide open as possible, and your ISO as ...
dawn and dusk
If you’re applying the ‘as fast a shutter speed as possible’ rule you may need a high ISO to enable more light to hit the sensor of your camera (especially when photographing at <anchor>dawn and dusk</anchor>). You could also open your aperture as wide as possible to achieve the same result.