Outstanding performance in well-lit situations. However not good for taking photos of the moon, sunsets with bright clouds, or night shots with bright lights. In these cases it produces a very obvious ghost image for each light source. Many of the online reviews either don't mention this ghost problem, or brush over it as inconsequential. I think it spoils night photograph in a major way. Unfortunately the ghost does not appear in the viewfinder, so one cannot compose the picture to reduce the effect. Instead one has to view the image after shooting to see how bad the ghost may be, then try another shot to move the ghost to a less critical position. Then afterwards crop the image to cut out the ghost. This is not what I expected from this lens. So I think this is a great lens, but not for high contrast situations.
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