Keith Reeder
Watch the birdie...
Evening all,
I've just noticed something with the images I've shot with my Nikon D70 in the last couple of days.
For example, I've attached a picture of a startling I took today - not a great shot, but that's not the point...
If you look at the "background" to the right of the bird, you might notice that it appears to be made up of a series of tightly-packed diagonal lines - I've also attached a crop of that part of the picture which makes them more obvious.
This is new to me, and it seems to correspond precisely with me starting to use a Jacobs/Cokin UV filter on the Sigma 135-400mm lens - it's an effect which has been noticeable on many of the images I've taken since, wherever the background has any "texture" to it.
Now I know that this is something I can easily test for myself, simply by taking the filter off again, but I'm keen to have a filter in place, just to protect the lens: so, is this a known effect of using a UV filter?
Admittedly this filter is at the budget end of the market, but given that it's only there as protection for the lens, I'd rather not have to pay more than the £30 I spent on this one...
Any advice/observations gratefully received.
I've just noticed something with the images I've shot with my Nikon D70 in the last couple of days.
For example, I've attached a picture of a startling I took today - not a great shot, but that's not the point...
If you look at the "background" to the right of the bird, you might notice that it appears to be made up of a series of tightly-packed diagonal lines - I've also attached a crop of that part of the picture which makes them more obvious.
This is new to me, and it seems to correspond precisely with me starting to use a Jacobs/Cokin UV filter on the Sigma 135-400mm lens - it's an effect which has been noticeable on many of the images I've taken since, wherever the background has any "texture" to it.
Now I know that this is something I can easily test for myself, simply by taking the filter off again, but I'm keen to have a filter in place, just to protect the lens: so, is this a known effect of using a UV filter?
Admittedly this filter is at the budget end of the market, but given that it's only there as protection for the lens, I'd rather not have to pay more than the £30 I spent on this one...
Any advice/observations gratefully received.
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