Can someone explain to me how AF-on might affect live view? I have been using AF-on lately and yesterday I put the camera on a tripod and took some pictures with live view. They all came out blurry. I used a remove trigger and just before I took the picture I pressed the AF-on button. Camera was set on AF-c 9point and I was focusing on a stream.
Can someone help me. I think I probably should have used AF-c single point or maybe even AF-s
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#1. "RE: Live View and AF-on" | In response to Reply # 0ericbowles Nikonian since 25th Nov 2005Wed 12-Jun-13 11:02 AM
Live View on a tripod is a great way to get precise focus. It's slower, but more accurate.
In order to take advantage of the AF capability, you can use AF-S or AF-C. With either you should choose single point AF to be precise rather than allowing the camera to automatically select the best focus point.
To focus in Live View, simply move the focus point general area where you want to focus. Then zoom in using the + button and you will see much more detail. You can fine tune the position of the AF sensor to the exact place you want. Then press AF-On and the camera will focus on that area. You will be able to see the focus in that area - and if it misses slightly you can repeat the process or manually adjust focus to your satisfaction.
With Live View you can also move the cursor to other areas of your image to understand the degree to which it is in sharp focus. Only use the AF-On button again if you really want to change focus.
I photograph a lot of moving water. While sometimes focus works on an area of the water, it can also miss focus badly. I typically want a rock, stick or leaf to be my sharp focus area in an image with moving water.
I'm assuming you have your camera set to use AF-On only for focus, and the shutter release does not focus. If you are focusing with the shutter release, the camera will re-focus on wherever the cursor is located when you activate the remote. In that case you might switch to manual focus to avoid focus with the shutter release.
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