High sensitivity can be used in four cases

Many students will know that high ISO will bring high noise, if the camera's own noise reduction effect is poor, or the sensor is too small (like DC, APS-C type) camera, the use of high ISO noise will be more Obviously, is the use of 'high ISO' as guilty, like all the time to avoid it? of course not! Now take a look at four high sensitivity can make good use of the situation now! –www.fsbus.com

First, when the solidification of ultra-fast action
When shooting sports, cars, pets, and even birds, the target may move very fast, even with large aperture lens, then the ambient light may not be able to let you use high-speed shutter (may need to use 1 / 8000s shutter !), Then upgrade the ISO is the most convenient way! Enhance the ISO also allows you to open the aperture to the maximum, so not only can maintain a certain depth of field, you can also improve the quality of the photo.
With the ISO 3200, the shutter can be raised to 1 / 2500s to capture the birds in flight.

Use ISO 640 with f / 4.5 aperture, shutter 1 / 800s to shoot the car.

Second, when to shoot star photos
In the evening shooting, many students will recognize Xiqiao Meng Meng after the tripod, the aperture can not only close small, ISO can also be set to a minimum, let the shutter has been open to exposure it. So when shooting still photos, of course, but in the shooting starry sky, if the shutter is long open, it will shoot the E rather than the little star of the stars! So the shutter speed can not be too long, then not only need to use a large aperture lens, but also to enhance the ISO, and sometimes even use ISO3200 to make the stars more prominent!
Use ISO 6400

Third, when the dark environment to be hand-held shooting
If you do not want to shoot hand shake lead to blurred photos, the shutter is better than the 'safety shutter' (with anti-shake function, except), and enhance the ISO to maintain the depth of field under a very effective method, Then do not imitate the use of digital cameras can enhance the ISO function!
ISO 2560 is used

Fourth, when you use a telephoto lens
If the students have read the necessary lens series, telephoto lens shooting skills of this article, you will know when the use of hand-held telephoto lens, your shutter must be fast enough to make the photos remain clear, and enhance the ISO will Can effectively increase the photosensitivity, keep the aperture when you can make the shutter faster, so the use of telephoto lens, the use of ISO800, 1600, etc. is not excessive.