Sigma DC 18-125mm f/3.8-5.6 OS HSM

Sigma DC 18-125mm f/3.8-5.6 OS HSM is a versatile camera glass that can cover a wide range of focal lengths. It has a good build quality and is suitable for general photography. The lens has a variable aperture, which means the maximum aperture changes as you zoom in or out. It has a decent autofocus system that can focus quickly and silently. The lens has multiple lens elements that are coated to reduce glare and improve image quality. It has a good resolution that can capture sharp images. The lens provides a decent bokeh effect that can help separate the subject from the background. The manufacturing time for the lens is not known. There are alternative lenses available in the market that offer similar or better features. The lens is suitable for photographers who want a single lens that can cover a wide range of focal lengths.

Positives:
This lens is incredible for the price. I’ve been using it for about a year now and it has exceeded my expectations. The zoom range is perfect for travel photography and allows me to capture a variety of shots without constantly changing lenses. The image stabilization works very well and helps to get crisp, clear shots even in low light situations. The lens build quality is fantastic and it feels very sturdy in hand.

Negatives:
The autofocus motor can be a bit slow at times, especially when trying to focus on moving subjects. However, this is not a major problem and can be solved by manually focusing the lens. Additionally, the distortion at the wide end is slightly noticeable, but can be easily fixed in post-processing software.

Conclusion:
Overall, I highly recommend the Sigma DC 18-125mm f/3.8-5.6 OS HSM camera lens for anyone who wants a versatile, mid-range zoom lens. The price is very reasonable and the build quality and image quality are both top-notch. While there are some minor drawbacks, they are far outweighed by the positives. If you’re looking for an affordable, high-quality lens that can handle a wide range of photography situations, this is the one to get.

Optical design

Full frame equivalent focal length is 27.0-187.5 mm. Has 7 aperture blades, mid-grade lenses usually have this amount of blades. Having rounded blades provides out of focus circle shape closer to a circle. It is a ring-type ultrasonic motor designed to provide quick and silent focusing.

Physical characteristics

Weights 505 grams so plan ahead, carry only if really necessary. With a lens filter diameter of 67 mm commonly filter size, gives you a variety of filter options. 88 mm long, requires consideration if you want to carry in the camera bag.