It is visible mainly in high-contrast scenarios but isn’t beyond repair thanks to the use of FLD and SLD elements. The lens exhibits some chromatic aberration, but for a sub $1000 lens with this focal length, the chromatic aberration is reasonable.

Moreover, the OS has an accelerometer to help with panning shots, or you can limit it for panning by using the switch for OS mode 2. Using the USB dock, you can increase the OS strength, however. The stabilization, in reality, is around three stops, which is excellent. While we are on the topic of sharpness, the addition of optical image stabilization means you’ll get sharper photos at slower shutter speeds. Otherwise, it is about -2EV at 150mm when wide open and about -1.6EV at 600mm when wide open. It does lose a bit more sharpness when used on an APS-C body though, as you would expect since this pushes the effectice focal length up to a massive 900mm!Īt around f/8, you will reduce the vignette to unnoticeable levels. You might notice the difference between the sharpness at 150mm and 600mm if you are pixel peeping, but in reality, it is pretty similar. It loses some sharpness the further you zoom in, but it is not that significant. But, the Sigma 150-600mm doesn’t disappoint in this regard.Īcross the zoom range, the lens is quite sharp, not as sharp as a prime telephoto lens, but quite sharp for a lens with this zoom range. Considering that we are talking about a lens that goes as far as 600 mm, you would expect either bad image quality or a high price point.

Sigma lens for canon