58mm Fader ND2-ND32 (1-5 Stop) Variable ND Lens Filter Neutral Density Filter for Camera Lens NO X Spot Nanotec Ultra-Slim Weather-Sealed
SKU: KF01.1449
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I'm not sure about discoloration issues. I've never notice any discoloration issues with mine I've had them for over a year and they work awesome. I use mine manly for long exposure shots. If you're experiencing discoloration perhaps you should reach out to the manufacturer or contact Amazon. Hope this helps!
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If your tamron 28-75 lens is 67mm, the two filters both work for your lens. Please verify your camera's lens thread size before purchase (usually marked somewhere on the lens barrel or printed underneath the lens cap).The number is always preceded by a "ø" (diameter) symbol
the two lens difference is the stops.
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Hi, this variable nd filter supports no vignetting range is 24mm. If the lens out of this range (such as 14）,there would be a little vignetting on images.
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Yes, the nd filter could stop at the end of the ranges.
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Female threads
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The side is labeled with the first and last stop... the others in between are just markings. Each stop does not click into place, but the movement of the ring is fluid and firm. Very easy to adjust.