Sigma DG 15-30mm f/3.5-4.5 EX Aspherical

The Sigma DG 15-30mm f/3.5-4.5 EX Aspherical is a camera glass that can be used with different camera mounts. It offers a wide range of focal lengths, making it ideal for landscape and architectural photography. It has an autofocus system, but can also be used manually. The lens is made up of multiple glass elements, including aspherical elements, which helps to reduce distortion and improve image quality. The lens is coated to minimize reflections and flare. The build quality is good, ensuring that the lens can withstand regular use. The aperture range is f/3.5-4.5, which is not the widest, but still allows for good low-light performance. The resolution is also good, making it suitable for high-quality prints. There are alternatives available, but this lens offers a good balance of features and performance for its price. It is a good choice for photographers who need a wide-angle lens for their full-frame camera.

Positives:
– The wide-angle range of 15-30mm allows for capturing expansive landscapes and cramped indoor environments with ease.
– The aspherical elements help to minimize distortion, resulting in sharper and more accurate images.
– The lens has a durable build quality, making it a reliable choice for photographers or videographers on-the-go.

Negatives:
– The aperture is not particularly fast, with a maximum of f/3.5-4.5. This means that low light situations may require the use of a tripod or high ISO settings.
– Autofocus can be slow and noisy, which may be a consideration for those who prefer shooting video with continuous autofocus.

Conclusion:
In conclusion, the Sigma DG 15-30mm f/3.5-4.5 EX Aspherical camera lens is a great choice for photographers or videographers who require a wide-angle lens. While it may not be the fastest lens, its aspherical elements help to minimize distortion, and its durable build quality makes it a reliable choice. The slow and noisy autofocus may be a downside for some, but for those who mainly shoot video and use manual focus, this lens is a great option.

Optical design

Has 8 aperture blades, with this amount of aperture blades you will be satisfied with the result.

Physical characteristics

With a lens filter diameter of 82 mm lens filters in this range can be expensive, purchase lens – and filter – only if you plan to keep them for long time, make a try with used ones. 130 mm long, requires consideration if you want to carry in the camera bag. Weights 615 grams so it is a heavy lens, consider using its own lens bag.