What does this mean ?

As I said in the beginning of this review, most photographers highly value a telephoto zoom lens with long focal lengths, a significant percentage of these photographers are looking for a lightweight, low cost option, and no one wants to give up great image quality or deal with a lens that does not...

When you consider Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary lens' superior build quality, uncommon versatility, exceptional imaging performance, superb handling, built in 4-stop OS system, enhanced close-up capability, and excellent AF system there’s a lot to like about this lens, and its...

Michael Topham tests an affordable telephoto zoom for E-mount and L-Mount mirrorless cameras

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  Excellent value for money, Reasonably compact for a 100-400mm zoom, Weighs less than rival lenses, Impressive sharpness, Fast, smooth and silent autofocus operation, Features built-in optical image stabilisation, Supports push/pull method of zooming, Well designed lens hood, Rubberised zoom ring,...

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  Teleconverters can only be used with L-mount version, Doesn't come supplied with a tripod socket (TS-111 tripod socket available for £139), USB dock UD-11 can only be used with L-mount version, Not weather-sealed

The Sigma 100-400mm F5-6.3 DG DN OS Contemporary is an affordable, quality telezoom lens with plenty of reach for sports and wildlife.

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  High-quality build, Stabilized optics, Quick, quiet autofocus, Useful on-lens controls, Built-for-mirrorless design

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  Teleconverters not available for E-mount version, Not fully protected from dust and splashes, Struggles with high-resolution sensors

Sigma has beaten the competition in being the first third-party lens maker to offer a native, mirrorless-optimized full-frame super-telephoto zoom for Sony's E-mount, and at just $950 it is a very attractive alternative to its name-brand competitor.

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  Impressive image quality, High-quality build, Fast, reliable autofocus, Portable size (for the zoom range), Incredible overall value

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  Tripod collar/foot is an additional expense, Zoom & focus rings switched position, Vignetting correction not perfect, requires additional help & causes faint color shift

Typical of Sigma’s ‘Contemporary’ line of lenses, the 100-400mm DG DN OS aims for good performance in a compact and lightweight package, at a competitive asking price. It comes up trumps for image quality, delivering excellent sharpness and contrast, while keeping colour fringing, distortions,...

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  Powerful telephoto zoom range, Relatively compact and lightweight, Good handling and overall performance

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  Fairly narrow aperture rating at long zoom settings, USB Dock and teleconverters unavailable for Sony mount version, Pricier than the older edition for Canon and Nikon DSLRs

It's no secret that Sigma lenes don't perform as fast at AF on Panasonic cameras as Panasonics own leses. However I promise that with a littler patience and tinkering you will be capturing some stunning wildlife photos.

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  Great Features, Great Picture Quality

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  Bit of a learning curve, Not the fastest optics or AF

Bought this lens to use with the Panasonic S5 after downsizing from a Nikon D500 and 200-500 f5.6 lens Due to disabilities the weight saving is a massive difference for me. I have owned this lens in Nikon mount previously and new what to expect although this is a new designed lens for mirror less...

I photograph birds and then make drawings from the birds. I was using a 24 to 200 on my A7III but wasn't getting the shots I wanted. I tried the Sony 100 to 600 G but that is a seriously bulky lens for my old arthritic hands!

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  Fast focus, Great Picture Quality, Lightweight, Quiet, Simple Controls

I photograph birds and then make drawings from the birds. I was using a 24 to 200 on my A7III but wasn't getting the shots I wanted. I tried the Sony 100 to 600 G but that is a seriously bulky lens for my old arthritic hands!

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  Fast focus, Great Picture Quality, Lightweight, Quiet, Simple Controls

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  Light and Very good sharpness

I bought this e fit lens after using my old Canon fit 100-400 with a Sigma adapter which I was very happy with. So far the new lens is still good, but I'm not yet sure if it beats the old one?

I bought this e fit lens after using my old Canon fit 100-400 with a Sigma adapter which I was very happy with. So far the new lens is still good, but I'm not yet sure if it beats the old one?

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  Firstly it has to be the price.

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  Light, compact and good sharpness also it focuses well

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  A fantastic and light weight telephoto lens with sharp opitics, great stabilisation and room for a tripod mount. Plus both the Sigma 1.4x and 2x teleconverters work with the lens while retaining full auto focus features.