[0.04 lb] I'm using this lens on my Sony FX30 for making documentaries. It's the perfect combination of form, function and price. Its light weight and small size makes it easy to carry and store. Its 18-50mm focal length and sharp performance fits the vast majority of my needs when making a documentary. Its price represents very good value. I considered other lenses such as the Tamron 17-70mm (too heavy) and the Sony 24-70mm GMII (too expensive) but I've been very happy with the choice I made.

[Snap-On] If you are not a purist and value practicality over prime perfection, this is a great lens. I swapped 3 primes (18 f2, 23 f2 and 27 f2.8) for this lens and couldn't be happier. Sure I lost a stop of light here and there, and probably some ultimate sharpness, but the practicality of having such a great choice of focal lengths with excellent image quality and contrast is well worth the trade-off. The lens is very light and balances extremely well with my Fuji X-S10. Highly recommended.

[Snap-On] had a great experience with this lens so far! beautiful quality but nice and compact so doesn't feel like a hassle to carry around, and the zoom is impressive as well. perfect if you're looking for a good starter lens (i have the a6400) and the macro is especially great.

[0.04 lb] Perfect match for the X-T5. A big advantage over the kit Fujifilm 18-55 is the aperture doesn't change as the focal length changes.

[Front] This is basically the APS-C equivalent of the 24-70mm 2.8, virtually a legendary workhorse for any photographer. I shoot stills and video on an a6500. My most basic requirements for my kit for decades (going back to when I only shot film) has been a zoom with a wide range and also a fast normal lens. Maybe add a dedicated portrait lens and an ultra wide. I have the Sony 18-135mm, and Sigma's trio which is just such a well planned set of primes (except for the varying filter threads!!), plus a Samyang 12mm. I rented Tamron's 17-70mm and it's fantastic, but for my work, it was just bigger and heavier than what I wanted. This Sigma fits the bill perfect for splitting the difference between my fast primes and my convenient super zoom. I loose some speed and some reach, but gain loads of convenience while retaining the amazingly small size. This zoom may be redundant in a few ways, but still the best of both worlds when I want/need it. Full frame guys (I shoot that too) may complain about slightly deeper depth of field and minor lowlight differences of the sensor, but this lens with a fitting camera is very close to a frame professional 24-70mm set-up at a fraction of the size. As for the extra 20mm you gain from the Tamron, I'm okay with a small crop if I need it and I can live with the 1mm less on the wide end. I would have loved the stabilization, but at least I have IBIS, even if not quite as good. I hope this review helps a few people looking at the same decisions as me as I was sizing up the 17-70, Sigma's trio, and this lens (the Sony 16-55 is just too rich for my blood).

[Snap-On] Use my lens with Sony A6600 APSC ... perfect, no complaints. Use for portraits and film work.

[77 mm] Love the small size and weight. Excited to have more quality options for Fuji X-mount.

[0.04 lb] Small, Light, fast. Great for video.

[0.04 lb] I am so impressed with this tiny constant f2.8 zoom. Close focusing at wide end is great, will focus closer than the lens hood. Takes up the space of a prime in the camera bag. Ideal for those times you want a zoom option and still want a small light kit. Optically it compares favorably with the Fuji !8-55 variable aperture, yet smaller and lighter. Recommended.

[77 mm] When my 16-70 f/4 Sony lens needed repair it was actually a wake up call. All the reviews are true. The lens is small and light and easy to handhold! Even wide open the center is tack sharp and the corners good! Stopped down to f/5.6 the entire image is sharp.
Distortion at both ends is visible but correctable in camera for jpegs or in raw via Lightroom lens profiles.
Focus is quick and accurate and the bokeh is nice and smooth. The Sigma colors are warm and realistic. This lens is perfect for general photography, landscape, portraits, event and travel.
This lens complements my 10-18 f/4 Sony; 60 f/2.8 Sigma; and 70-200 f/4 Sony.
Great job Sigma!!