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Weird problem with a Nikon 28mm 1.8G
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<blockquote data-quote="clarnibass" data-source="post: 154595" data-attributes="member: 9831"><p>I looked more into it.</p><p></p><p>First, it seems to need approx +8 FT. I guess I was lucky until now and never needed FT. This improves it, however, it doesn't fix the problem at all and it's obviously still there.</p><p></p><p>What I found out now is that (in AF-S mode, though I've tried AF-C too), if I focus from macro, it doesn't focus well. Then, if I press to focus again, it almost always fixes the focus. I can hear it and see it in the distance window too, moving a fraction to the correct focus. If I focus twice the focus is good. From the infinity side, it does this only rarely (which I guess is normal to happen occasionally), while it does it at least 90% or more of the times from the macro side. My 50mm and 85mm lenses don't do this except maybe a couple of times out of many dozens of tries.</p><p></p><p>In addition, for a few minutes earlier it didn't focus at all if I put it manually on the macro end. Moving it slightly to a farther distance fixed it. A few minutes later it was fine.</p><p></p><p>From these consistent and intermittent issues I'm sure there's a problem, which is too bad because other than that (and the need for FT) the lens is great and without the focus shift that some seem to have and I was worried about. </p><p></p><p>I'll ask for a replacement.</p></blockquote><p></p>
[QUOTE="clarnibass, post: 154595, member: 9831"] I looked more into it. First, it seems to need approx +8 FT. I guess I was lucky until now and never needed FT. This improves it, however, it doesn't fix the problem at all and it's obviously still there. What I found out now is that (in AF-S mode, though I've tried AF-C too), if I focus from macro, it doesn't focus well. Then, if I press to focus again, it almost always fixes the focus. I can hear it and see it in the distance window too, moving a fraction to the correct focus. If I focus twice the focus is good. From the infinity side, it does this only rarely (which I guess is normal to happen occasionally), while it does it at least 90% or more of the times from the macro side. My 50mm and 85mm lenses don't do this except maybe a couple of times out of many dozens of tries. In addition, for a few minutes earlier it didn't focus at all if I put it manually on the macro end. Moving it slightly to a farther distance fixed it. A few minutes later it was fine. From these consistent and intermittent issues I'm sure there's a problem, which is too bad because other than that (and the need for FT) the lens is great and without the focus shift that some seem to have and I was worried about. I'll ask for a replacement. [/QUOTE]
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Weird problem with a Nikon 28mm 1.8G
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