In the same situation, back button focus could have saved me. Just as I was shooting madly, another photographer scooted too close in front of me and my 800mm lens began to focus on the photographer's shoulder! Focus on such a long lens can be somewhat slow, and by the time I readjusted my heavy tripod and lens, the wolf was running away and all I got was butt shots.
While I was shooting wildlife in Yellowstone earlier this year ( read about that trip here), I came amazingly close to a pack of wolves one morning (well, close as in it filled the frame with a giant 800mm lens… I wasn't THAT close…) and I shot as fast and furious as possible as the famous Alpha 06 wolf played in the snow in front of me. Back button focusing is superior in this instance as long as the photographer is careful not to change the distance between the camera and the subject (which would throw off the focus) when using shallow depth-of-field. You'll note that there are other ways to solve this problem, such as focus and recompose (equally tedious, but sometimes it's your best bet), or holding the AF-L, AE-L button, but that is just plain annoying. With back button focusing, the photographer activates focus for the first shot, and then is able to recompose infinite times as long as the distance between the camera and the subject remains exactly the same. You can use back button focusing to solve this problem because the distance between the photographer and the subject stays the same between both shots, but the composition changes. If your camera has 40+ focus points like many DSLRs do, you have to use the four-way selector to tediously move the focus point to the correct spot, focus, and then take the photo. You take your first shot, and then change your composition and need to move your focus point to be on the person's eye. The person who you are shooting is standing still and you want to take several different shots of the person. Example number oneįirst, suppose you are shooting portraits. The best way to explain the benefits of back button focusing is through two examples.
What is the purpose of back button focus? Back button autfocus makes it so the shutter button doesn't control the focus activation at all, but instead assigns another button on the back of the camera (hence the name) to activate focusing on the camera. The camera usually focuses when the shutter button is pressed half way down, and then the photographer takes the picture when the button is pressed in fully.
Photography nikon d3200 how to#
In this article you'll learn what back button focusing is, and how to back button focus for Canon and Nikon cameras. One of the most frequent questions I have received in the last month has been about back button focus and how to use it on Canon and Nikon DSLR cameras. Put your mouse over the picture and click the “Pin it” button. I made this graphic so it is convenient for you to pin this on Pinterest if you'd like.
0 kommentar(er)
