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The Sigma 150-500 mm lens is large long and heavy. I use it on my Pentax K-20 and K-1. It covers the full frame sensor and on the APSC, acts as a 225-750 mm lens. I find the images to be quite sharp with excellent color rendition. It has image stabilization built into the lens. If one is reasonably strong, it can be hand held. It is a little slow on auto-focusing so it may not be the best for action photography. Comparing it to the price of Brand name lenses, it is a good bargain. I am enthusiastic about this lens. A photo of a Great White Heron is attached to show it's use.
Verified purchase: Yes | Condition: Pre-owned
In fairness, I am still getting used to this lens and I hope I will come to like it more as I learn its operations. So far, I haven't found it very sharp, even on a tripod. I haven't yet figured out why autofocus works some time, but not other times. There are some fairly confusing things about lens settings versus camera settings, such as different lens behaviors in AF-S and AF-C on the camera, the need to set manual focus on both the lens and the camera, and the distinction between stabilization on the lens versus the built in shake reduction on m Pentax. And understandably for a lens of the size, it is heavy. Having said all that, it is a great deal of focal length for a relatively small amount of money, and no other manufacturer seems to make a similar lens in the Pentax space so I consider the lens a good value. I'll re-read the instructions, see what I need to do to get better performance, and hopefully I will come to like the lens more. Ultimately I probably would recommend this to a friend, but not based upon my experience to date.Read full review
This lens if a great addition to my photography kit. Excellent build. Not too heavy. Very happy with it.
Verified purchase: Yes | Condition: Pre-owned
Have used this lens for shooting baseball games. Works very well, can get close up shots without being close up. Looking forward to trying the lens on nature shots.
Verified purchase: Yes | Condition: Pre-owned
The very thing that was missing from my photo bag and the price was phenomenal. A great buy!
Verified purchase: Yes | Condition: Pre-owned