I am an amateur photographer owning this lens for last 3 months, spending every weekend for bird and wild life photography. This is a very good,solid lens. It produces good image in f4.5, and step down to f5.6 very good, f.6 -f8 tack sharp image. I got some excellent shots.

I was torn being a Canon user for years and buying a non-Canon lens. The price was $1300.00 less than the Canon 500mm. Weight and size were an issue also, the lens head is smaller and fits better in traveling cases. Carrying this lens (6.9 lbs) on a monopod you will notice the difference.

I purchased this lens used as an inexpensive way to enter the super telephoto arena.

Good build; fast auto-focus; sharp results; cool filter drawer design

Case could be a little beefier; otherwise; get one

The only one thing that does work dispite what Sigma says, the lens does auto focus on a Canon 1 series body with a teleconvertor, but with the 2x times it does hunt a bit, but with the 1.4x + tripod great combo.

Consistent Output; Durable; Easily Interchangeable; Quick Focus; Rugged; Sharp Focus; Strong Construction

Heavy

Brilliant sharp lens for wildlife and sports photography

managable size; sharp; good build; great HSM; value

shortish hood; fractionally less contrast than nikon/canon competition

I have used the Nikon 500mm f4 and the Sigma is just as sharp as the Nikon. The color is probably just a tiny bit more accurate with the Nikon, but without seeing the pictures side by side and of the same subject I don't think you would every notice anything.

The Sigma 500mm f/4 DG OS HSM Sports lens is a much more affordable alternative to similar lenses from Canon and Nikon without any sacrifice in image quality or performance. With the Canon EF 500mm f/4L IS II USM retailing for £7600 and the Nikon AF-S NIKKOR 500mm f/4E FL ED VR priced at £8000, the...

While it's a shame that picture and sound quality haven't been upgraded, the iPhone 13 was great in these regards and the iPhone 14 is, too Excellent display Admirable headphone performance Solid build quality No upgrades to picture or sound Familiar design Notch is still present

Apple's latest non-Pro iPhone is superb - it's just that it's strikingly similar to last year's effort.

Still an incredible smartphone, Brilliant battery life gets a bit better, Excellent camera system gets a bit better

Last year’s Pro hardware, Wireless charging slow by modern standards, No USB-C; it’s now well overdue

[Please note: this review is for the previous version of this lens. The review below is for the Sigma 500mm, f/4.5, EX APO HSM lens, with aperture ring. The current marketed lens has a DG designator. It is very similar in design and construction but lacks an aperture ring.

Fast AF; easy access to controls; capable of sharp images

AF irratic with 1.4X converter; f/4.5 max