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Sigma 8-16mm f/4.5-5.6 DC HSM Interchangeable Lens Review

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Category: Interchangeable Lenses
Product: Sigma Sigma 8-16mm f/4.5-5.6 DC HSM
Price: £549.00
Rating: 4 out of 54 out of 54 out of 54 out of 54 out of 5

Sigma 8-16mm f/4.5-5.6 DC HSM Lens review - A unique wide angle lens for APS-C cameras providing a rectilinear field of view equivalent to that of a 12-24mm lens on a 35mm camera.

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Handling and features
Performance
Verdict
Specification

Sigma 8-16mm f/4.5-5.6 DC HSM
Gary Wolstenholme takes a look at this unique lens, which is currently the widest rectilinear lens available for APS-C sensor cameras.

This 8-16mm lens from Sigma costs around £590 and apart from being the widest lens currently available for APS-C cropped sensor cameras, it also sports silent internal focusing but doesn't accept filters, which may put those who like to use filters off this lens.

As there is nothing else quite as wide as this currently, the closest alternatives are the various ultra wide zooms that start at 10mm. This extra 2mm does make a noticeable difference, and should make this lens every estate agent's best friend, as it will allow them to make their shoebox sized bedsits look positively palatial. Sigma offer two different 10-20mm lenses, which both offer silent internal focusing and accept screw in filters. The more expensive of the two has a constant aperture of f/3.5 through the zoom range and costs around £480. The cheaper alternative has a slower, variable aperture of f/4-5.6 and costs around £400.

Tamron's closest match is their 10-24mm f/3.5-4.5 SP lens, (reviewed here http://www.ephotozine.com/article/tamron-af10-24mm-f-3-5-4-5-di-ii-ld-asph-macro-12931 )which isn't as wide as the lens being reviewed here and doesn't have silent focusing, but only costs around £380.

Canon users have the EF-S 10-22mm f/3.5-4.5 to choose from, which costs around £640 and includes a silent focusing motor.

The closest match in Nikon flavour is their 10-24mm f/3.5-5.6 which also sports silent focusing, and costs around £635.

Sony's current widest lens for their crop sensor Alpha camera is their 11-18mm DT AF lens, which lacks silent focusing and the width of the Sigma, as all these lenses do, and it costs around £530.

Pentax don't currently make a rectilinear lens wider than 12mm, but they do make a 10-17mm fisheye zoom, which costs around £430 and lacks a silent focusing motor and will make your straight lines all bendy, which is fine if that's what you're after.

Sigma 8-16mm f/4.5-5.6 DC HSM: Handling and features
For a lens with such a wide field of view, this 8-16mm optic is surprisingly compact and lightweight and Sigma have achieved this without compromising the overall build quality. Much of the lens barrel is constructed from high quality plastics with a powder coated effect applied, which looks very smart, but can show marks easily. Both the zoom and focus rings are flush to the lens barrel, with ridged rubber grips, which help to give the lens a very positive feel.

As this is a HSM lens, manual focus adjustments can be made at any time, which can be handy if you wish to fine tune the focusing while using autofocus. To be honest though, on a lens as wide as this I rarely found use for this feature as the depth of field is so great at 8mm, it can be difficult to make adjustments manually.

A scalloped lens hood is built into the lens barrel, providing as much shade as is possible to the large bulbous front element. As is the case with other similarly wide lenses, such as Sigma's 12-24mm and 15-30mm lenses, there is no way to attach a filter to the front of the lens without causing vignetting. This may pose issues for those who enjoy using neutral density graduated filters for landscapes. Focusing is performed internally and the lens does not extend during zooming either.

As you might expect from an ultra-wide lens, focusing is lightning quick, and silent thanks to the HSM motor. No hyperfocal markings are provided on the lens' distance scale, which is a shame, as hyperfocal focusing can be extremely useful with a lens like this.

Overall, I really enjoyed using this 8-16mm optic, thanks to its compact dimensions, excellent build quality and extremely wide field of view.

Sigma 8-16mm f/4.5-5.6 DC HSM: Performance
Throughout the range, this 8-16mm optic delivers very good sharpness in the centre from maximum aperture, with the quality towards the edges catching up as the lens is stopped down.

At 8mm the sharpness in the centre of the image is already outstanding at f/4.5, although the level of sharpness drops noticeably as you move towards the edge of the frame. Peak quality across the frame is achieved between f/8 and f/11, where the sharpness in the centre is very good, and the resolution recorded towards the edges has increased to good levels.

The lens behaves in much the same way throughout the zoom range, producing images with superb sharpness in the centre, although at longer focal lengths, the increase in sharpness towards the edges of the frame as the lens is stopped down is less pronounced.

Resolution at 8mm Resolution at 12mm
Sigma 8-16mm f/4.5-5.6 DC HSM Resolution at 8mm Sigma 8-16mm f/4.5-5.6 DC HSM Resolution at 12mm
Resolution at 16mm How to read our graphs
The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges. Averaging them out gives the red weighted column.

The scale on the left side is an indication of actual image resolution. The taller the column, the better the lens performance. Simple.

For this review, the lens was tested on a Nikon D300 using Imatest.
Sigma 8-16mm f/4.5-5.6 DC HSM Resolution at 16mm

Sigma have pushed the boundaries of what is possible by creating a lens for APS-C DSLRs with such a wide field of view, and unfortunately this shows in the level of colour fringe towards the edge of the frame. Chromatic aberrations are at their highest level at 8mm and f/4.5 where the fringing covers and area of 1.76 pixel widths. This will be quite visible in images with high contrast objects towards the edge of the frame, such as tree branches, or some architecture. Luckily many image editing software packages offer effective tools to correct this phenomenon, so it may be worth familiarising yourself with these in cases when the fringing is too disturbing.

Chromatic Aberrations at 8mm Chromatic Aberrations at 12mm
Sigma 8-16mm f/4.5-5.6 DC HSM Chromatic Aberrations at 8mm Sigma 8-16mm f/4.5-5.6 DC HSM Chromatic Aberrations at 12mm
Chromatic Aberrations at 16mm How to read out charts
Chromatic aberration is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on a Nikon D300 using Imatest.
Sigma 8-16mm f/4.5-5.6 DC HSM Chromatic Aberrations at 16mm

Falloff of illumination towards the corners of the frame is quite pronounced, especially at 8mm, where the corners are 4.37 stops darker than the image centre at f/4.5. This will be particularly noticeable on areas of flat tone, such as overcast skies. Image are not visually uniform until f/11, with even f/8 showing a noticeable level of darkening towards the corners. The lens behaves itself much better with regards to light falloff at the telephoto end of the zoom range. At f/5.6 the corners are only 0.895 stops darker than the image centre and images are visually uniform by f/8.

For a lens covering such an extreme field of view, distortion levels are surprisingly low. At 8mm Imatest recorded 5.62% barrel distortion, which will certainly be noticeable, but this level is lower than many lenses that aren't as wide, which is quite impressive. At 16mm, the level of barrel distortion drops to 0.562%, which is a very low level indeed and should pose few problems, even with straight lines close to the edge of the frame. Thankfully the distortion pattern is uniform throughout the zoom range, which means any distortion should be fairly simple to correct in image editing software afterwards, if absolutely straight lines are critical.

Click on the thumbnails for a high resolution image.
Sigma 8-16mm f/4.5-5.6 DC HSM @ 8mm   Sigma 8-16mm f/4.5-5.6 DC HSM @ 16mm
Care needs to be taken not to get your feet in the shot when shooting at 8mm due to the extremely wide field of view.   Levels of distortion are impressively low, but especially so at 16mm.

Even with the built-in scalloped hood, it was always going to be inevitable that this lens would be quite prone to flare. Considering the nature of the bulbous front element, the lens doesn't perform too badly when compared to lenses of a similar design, but strong light sources may cause blue ghosts and a severe loss of contrast depending on how it catches the front element. So long as care is taken when composing in harsh lighting conditions the lens is still perfectly usable.

Sigma 8-16mm f/4.5-5.6 DC HSM: Verdict
Having such a wide field of view, coupled with the close minimum focus distance of only 24cm, makes this lens a lot of fun to use. It may not be everyone's cup of tea, especially if you like to use filters on your wide lenses, and a lens as wide as this can be quite a challenge to use well. Saying that, if you find yourself hitting the stop at the wide end of the zoom on your current APS-C compatible ultra-wide zoom, then this lens is certainly worth a look.

Overall it is well built, well priced and performs pretty well. Just like its full-frame 12-24mm cousin, this lens is one of a kind and should find a home in plenty of photographer's kit bags.

Sigma 8-16mm f/4.5-5.6 DC HSM
A truly unique lens, offering a wider field of view on APS-C DSLRs then anything else currently available.
Sigma 8-16mm f/4.5-5.6 DC HSM: Pros

Sigma 8-16mm f/4.5-5.6 DC HSM Outstanding sharpness in the centre
Sigma 8-16mm f/4.5-5.6 DC HSM Excellent build
Sigma 8-16mm f/4.5-5.6 DC HSM Unique wide angle field of view for APS-C cameras
Sigma 8-16mm f/4.5-5.6 DC HSM Compact dimensions
Sigma 8-16mm f/4.5-5.6 DC HSM Silent focusing
Sigma 8-16mm f/4.5-5.6 DC HSM Low distortion

Sigma 8-16mm f/4.5-5.6 DC HSM: Cons
Sigma 8-16mm f/4.5-5.6 DC HSM CA towards edges of the frame at 8mm
Sigma 8-16mm f/4.5-5.6 DC HSM Falloff at 8mm
Sigma 8-16mm f/4.5-5.6 DC HSM No way to attach filters

FEATURES Sigma 8-16mm f/4.5-5.6 DC HSM
HANDLING Sigma 8-16mm f/4.5-5.6 DC HSM
PERFORMANCE Sigma 8-16mm f/4.5-5.6 DC HSM
VALUE FOR MONEY Sigma 8-16mm f/4.5-5.6 DC HSM
OVERALL Sigma 8-16mm f/4.5-5.6 DC HSM

Sigma 8-16mm f/4.5-5.6 DC HSM: Lens specification
Price £590.00
Contact http://www.sigma-imaging-uk.com
Filter size 72mm on push on hood
Format APS-C
Construction 15 elements in 11 groups
Angle-of-view 114.5 - 75.7 degrees
35mm equivalent focal length (on APS-C body) 12-24mm
Internal focusing Yes
Image stabilisation No
Minimum focus 24cm
Maximum aperture f/4.5-5.6
Minimum aperture f/22-29
Weight 555g
Size 75x 105.7mm
In the box Fitted Padded Case
Front and Rear Caps
Instruction Manual
1 Year Warranty Card

The Sigma 8-16mm f/4.5-5.6 DC HSM costs around £549 and is available from Warehouse Express here:

Sigma 8-16mm f/4.5-5.6 DC HSM for Canon
Sigma 8-16mm f/4.5-5.6 DC HSM for Nikon
Sigma 8-16mm f/4.5-5.6 DC HSM for Sony
Sigma 8-16mm f/4.5-5.6 DC HSM for Pentax
Sigma 8-16mm f/4.5-5.6 DC HSM for Sigma


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Comments

pxwebste
pxwebste  10 Ireland
3 Feb 2011 - 2:29 PM

The focal range will make every landscape photographer look twice, until they see you can't attach filters....

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9 Feb 2011 - 10:05 AM

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DRicherby
DRicherby  5269 forum posts United Kingdom725 Constructive Critique Points
9 Feb 2011 - 10:05 AM

This is not the widest-available lens for the cameras listed because you've forgotten about the Canon 8-15mm f/4L, though that is a fisheye.

Filters can't be attached because the front lens element is strongly convex. That means they'd have to be mounted a long way from the lens which, as the review says, is going to cause vignetting.

Last Modified By DRicherby at 9 Feb 2011 - 10:05 AM
theorderingone
10 Feb 2011 - 12:09 AM

I did say the widest rectilinear lens available. A fisheye isn't rectilinear.

Last Modified By theorderingone at 10 Feb 2011 - 12:09 AM
DRicherby
DRicherby  5269 forum posts United Kingdom725 Constructive Critique Points
10 Feb 2011 - 12:39 AM

theorderingone wrote:
> I did say the widest rectilinear lens available.

In the description below the photo, yes. But the first paragraph of the article proper says just "widest lens" and the second paragraph says "There is nothing else quite as wide as this". Paragraph seven includes a comparison with Pentax's 10mm fisheye so why not mention the Canon fisheye, too?

> A fisheye isn't rectilinear.
I think I made it clear that a fisheye is something different by saying, "though that is a fisheye".

theorderingone
15 Feb 2011 - 10:21 PM


Quote: Pentax don't currently make a rectilinear lens wider than 12mm

Is what I said and is the reason I mentioned Pentax's fishy zoom.

Canon do make a 10mm rectilinear wide angle, which is only 2mm shy of the 8mm of the Sigma. In my mind you may have both options in your mind when actually going to buy a wide lens.

Can we agree to disagree?

DRicherby
DRicherby  5269 forum posts United Kingdom725 Constructive Critique Points
15 Feb 2011 - 10:27 PM

theorderingone wrote:
> Can we agree to disagree?

Yes, I think we've both made our points. Smile

theorderingone
16 Feb 2011 - 4:19 PM

Good good! Smile

greggan
greggan  6
30 Apr 2012 - 5:47 PM

I bought and love this lens and I love it even more now when I have found out away to use filter with it!
Ref:The Sigma 8-16mm lens filter solution

Refards/StefanGrin

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