Sigma 120-400 4.5-5.6 APO DG OS HSM

The Sigma 120-400 4.5-5.6 APO DG OS HSM lens is a great option for photographers who need a high-quality telephoto zoom lens for their full-frame camera. It has a good optical design, which means it works best in good lighting conditions. The lens has an autofocus system that is quick and silent, making it easy to capture sharp images. The lens has 9 aperture blades, which helps to create a pleasing bokeh effect in the background of your photos. The lens is 203mm long and has a 77mm lens filter diameter, which is a common size for filters. However, it is a heavy lens, weighing 1750 grams, so it is best to use its own lens bag to carry it. The lens is made with high-quality materials and has a good build quality. It has a good resolution, which means your photos will be sharp and clear. The lens has a good coating, which helps to reduce glare and improve image quality. The lens was manufactured with care and attention to detail, which ensures that it is a reliable and long-lasting piece of camera glass.

Positives:
I am absolutely blown away by this lens! It has exceeded all my expectations with its sharpness, image quality, and versatility. I predominantly use it for landscape and sports photography, and it performs exceptionally well in both scenarios. The image stabilizer is a godsend when shooting handheld, and the autofocus is fast and accurate. I also really appreciate the range of focal lengths it offers, allowing me to capture a wide variety of shots without having to switch lenses. The build quality is solid, and the lens feels very sturdy in my hand; I’ve taken it on many outdoor adventures and it has held up well.

Negatives:
One minor drawback is that this lens is quite heavy, which can be tiring to hold for extended periods of time. Also, while the autofocus is generally very good, it can struggle in low light conditions or when trying to track fast-moving subjects. Finally, the lens hood can be a bit fiddly to attach and remove, which can be frustrating when you need to switch quickly between using it and not using it.

Conclusion:
Overall, I would highly recommend the Sigma 120-400 4.5-5.6 APO DG OS HSM lens to any photographer looking for a high-quality telephoto lens that can perform well in a variety of situations. The image quality and versatility are exceptional, and the lens is built to last. While it may not be the lightest lens out there, the benefits it offers more than make up for any minor inconveniences.

Optical design

Has 9 aperture blades, with this amount of aperture blades you will be satisfied with the result. It is a ring-type ultrasonic motor designed to provide quick and silent focusing. Great choice mainly for good light conditions

Physical characteristics

203 mm long, with this size carry only if you use it. With a lens filter diameter of 77 mm this lens deserves a good quality filter, this is commonly filter size, offers a wide range of filter options. Weights 1750 grams so it is a heavy lens, consider using its own lens bag.