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<blockquote data-quote="AxeMan - Rick S." data-source="post: 33904" data-attributes="member: 1746">I shoot lightning pictures, yes you have found your problem.&nbsp; It's your auto focus.&nbsp; In order for the auto focus to work it needs contrast.&nbsp; So with that said when your shooting at night and everything is black where is your auto focus going to find contrast?&nbsp; It's not so it going to keep looking till it finds some, now it not going to unlock your shutter button till is can find that contrast and tells itself it's in focus.&nbsp; &nbsp;Everyone is right, the walk around to this is to switch into manual focus.&nbsp; One of the ways as pointed out here by Mike is to somehow during the day mark you lens where Infinite is.&nbsp; Mike is right turning the lens all the way past Infinite is not Infinite because the lens need to go past Infinite to get to Infinite.&nbsp;Another way to set your lens is find Infinite focus in day light and switch your camera using the menu to manual focus.&nbsp; At night you can do the same thing just point your lens toward a light in the distance and in the menu switch to manual focus.&nbsp;If you use a switch on your lens to switch to manual focus that will work too HOWEVER if you touch or move the focus ring on the camera it going to change and your not going to know it.&nbsp;I found this out the hard way once. I set my Infinite focus at the house, put my camera in my bag and went out, took it out of the bag and set it up on a tripod and started shooting.&nbsp; Thought I didn't have to worry about focus because I set it at home and it was right on and everything looked fine through the view finder and live view.&nbsp; Downloaded my photo's and they were just a touch out of focus enough that anyone could see it.&nbsp; Hope this helps.</blockquote>

[QUOTE="AxeMan - Rick S., post: 33904, member: 1746"] I shoot lightning pictures, yes you have found your problem. It's your auto focus. In order for the auto focus to work it needs contrast. So with that said when your shooting at night and everything is black where is your auto focus going to find contrast? It's not so it going to keep looking till it finds some, now it not going to unlock your shutter button till is can find that contrast and tells itself it's in focus. Everyone is right, the walk around to this is to switch into manual focus. One of the ways as pointed out here by Mike is to somehow during the day mark you lens where Infinite is. Mike is right turning the lens all the way past Infinite is not Infinite because the lens need to go past Infinite to get to Infinite. Another way to set your lens is find Infinite focus in day light and switch your camera using the menu to manual focus. At night you can do the same thing just point your lens toward a light in the distance and in the menu switch to manual focus. If you use a switch on your lens to switch to manual focus that will work too HOWEVER if you touch or move the focus ring on the camera it going to change and your not going to know it. I found this out the hard way once. I set my Infinite focus at the house, put my camera in my bag and went out, took it out of the bag and set it up on a tripod and started shooting. Thought I didn't have to worry about focus because I set it at home and it was right on and everything looked fine through the view finder and live view. Downloaded my photo's and they were just a touch out of focus enough that anyone could see it. Hope this helps. [/QUOTE]

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