If your subject is moving quickly and your shutter speed is too slow, the photo will end up blurry – so make sure you’re using a fast-enough shutter speed to freeze all motion in the scene.Ĭhoosing the right autofocus mode: Conclusion For instance, if you are zoomed out to 100mm, your shutter speed should be 1/100s or faster to avoid camera shake.
Make sure your shutter speed is faster than the equivalent of your focal length. If the shutter speed is too slow, the camera picks up that movement, and it gives you a blurry photo. When you depress the shutter, you move the camera. In this case, your autofocus is working, but the depth of field is so shallow, it’s hard to tell that your subject is in focus. You might have an extremely shallow depth of field.If a camera can’t find any contrast, it can’t focus. Why? Cameras use differences in colors and tones to determine their focus. If you try to photograph a solid sheet of white or any single-colored wall, most autofocus systems will struggle. Your image needs to have some contrast for most autofocus systems to work. Your subject might not have enough contrast.If you are too near your subject, the camera may not be able to focus properly. I’d recommend you consider these solutions: What if you set up your autofocus properly and the lens still won’t focus? This can happen more frequently than you might think! Other issues to consider
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So every now and then, when your camera can’t seem to focus, and you don’t hear the motor searching back and forth, check to see if you selected manual focus without meaning to. Note that you can turn off your autofocus on accident. Well, if your camera is having trouble detecting your focus point, it might be more efficient to focus the camera yourself. You always have the option of turning off the autofocus function and choosing the manual focus setting. However, you’ll often lose the ability to focus and recompose, because your camera may attempt to refocus based on the position of its autofocus point – so make sure to bear that in mind. But as soon as the subject moves, your camera will switch to AF-C and begin tracking.įor some photographers, this is the best of both worlds and allows you to deal with erratic subjects that repeatedly move and then stop suddenly (i.e., birds). With AF-A activated, you can focus on an unmoving subject exactly as if you are working in AF-S. However, AF-A always involves some sort of automatic switching between AF-S and AF-C modes, based on whether your camera perceives a moving subject or an unmoving subject.
This hybrid mode (“AF-A” for Nikon or “AI Focus” for Canon) works differently depending on your camera. A third option merges the functionality of the single autofocus and continuous autofocus modes.
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