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You will find some of the frequently asked questions about products. If you cannot find here an answer to your question please contact us
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The warranty is 1 year, but extended warranty is available.
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Can be compatible, the threaded interface is 3/8 inch tripod can be applied.
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The diameter of the tube is 25mm.
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The length of the arm is 32cm
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Works fine throughout the range on my 10-20 wide angle lens on a cropped sensor. Although I suspect that 10mm would be the absolute limit, any wider and I think vignetting would occur. I don't use the extreme 10mm end that often however I was expecting some vignetting but I seem to have been lucky and gotten away with it. This is a really nice set of filters. Hope this helps.
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Yes, they can be taken off, you can buy more frames too, to fit other 100x100 filters and gradient filters. You only need to pull apart one joint and the filter can be removed, just pinch each section and pull.
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This is possible if you do not have a suitable adapter ring. However, care must be taken when reducing larger lens diameters because of possible vignetting.
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Supporting the largest filter size is 82mm, 77mm lens size is ok, thanks.
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Yes, if you want to use normal square filter on K&F Concept X PRO system, needs to install K&F Concept filter protect frame on the filter first.