The Sigma 50-150 combines the focal length range, size and weight as well as the wide aperture from the more professional telephoto lens. It comes with a flat plane of sharp focus but with a slight curve or distortion at the wide end. It comes with the latest optical technology and offers the users a good correction for ghosting, flare and aberration thus assuring them of high quality images all through the zoom range.
While the flare is well controlled at the 50mm mark, it is at its best at the 150mm. For the focal length, the transition is linear. Users will start noticing a mild barrel distortion in the center of the frame when the Sigma 50-150 lens is at 50mm and pincushion distortion at 80mm and 150mm. It can be quite strong on those two focal lengths.
When it comes to chromatic aberration, it is noticeable at 100mm at the corners, although it is not present at 50mm and 70mm. It becomes even stronger at the 150mm mark. With the Sigma 50-150, users will also experience vignetting at the corners at 150mm. Fortunately, they can clear up all the shaded region by f/4 and f/5.6 for corners that are evenly lit.
The Sigma 50-150 also comes with nice physical features. It has the HSM mechanism that is suitable for internal and rear focusing mechanism. The AF is not only moderately fast but also quiet. Manual focusing will produce some squeaking noise, but it is not loud or significant at all.
While the flare is well controlled at the 50mm mark, it is at its best at the 150mm. For the focal length, the transition is linear. Users will start noticing a mild barrel distortion in the center of the frame when the Sigma 50-150 lens is at 50mm and pincushion distortion at 80mm and 150mm. It can be quite strong on those two focal lengths.
When it comes to chromatic aberration, it is noticeable at 100mm at the corners, although it is not present at 50mm and 70mm. It becomes even stronger at the 150mm mark. With the Sigma 50-150, users will also experience vignetting at the corners at 150mm. Fortunately, they can clear up all the shaded region by f/4 and f/5.6 for corners that are evenly lit.
The Sigma 50-150 also comes with nice physical features. It has the HSM mechanism that is suitable for internal and rear focusing mechanism. The AF is not only moderately fast but also quiet. Manual focusing will produce some squeaking noise, but it is not loud or significant at all.
The users will benefit from the Full Time Manual (FTM) focusing on this lens. Besides that, they will also benefit from the internal zooming of the Sigma 50-150 HSM lens, especially the user of Nikon entry-level DSLR cameras. One important thing is that the front element of the lens will not rotate, allowing users to use the circular polarizer or the filters with split neutral density.
The Sigma 50-150 is not only featherweight but also compact, making it easy to carry and handle. It is not a burden to carry for long durations. Apart from that, the users will have a smooth process when it comes to the zoom and focus rings. It does not wobble effect and it is well sized.
The users can get a number of accessories to help them with their lens. It comes with a lens hood and can be used in a wide number of occasions ranging from portraits to scenic images. It is also great for capturing moving images and subjects, making the Sigma 50-150 lens a good choice for those looking to capture sports actions.
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