Sigma 17-50mm f/ii.eight EX DC OS HSM Lens Review
The Sigma 17-50mm f/two.8 EX DC OS HSM Lens features a prissy range of focal lengths, a broad f/2.eight aperture, HSM autofocus and Bone (optical stabilization) in a well-built and reasonably-priced lens.
Most of us need at least i general purpose lens – and the focal length range is usually my primary qualification for such a lens. The 17-50mm focal length range falls squarely in the recommended general purpose lens focal length range for the APS-C sensor format DSLRs information technology is compatible with.
This focal length range delivers that same bending of view that a 27.ii-80mm lens on a full frame DSLR would deliver, simply again, this APS-C-only lens is not compatible with the larger format SLRs. Here is an example of what this focal length range looks like.
My field piece of work for the Sigma 17-50mm f/2.viii EX DC Os HSM Lens review was done in early bound. Later on a long, cold wintertime, the bright new growth on the copse was looking gorgeous to me. The 17-50mm focal length range is nice. It works great for around-the-house shots (inside and out), for landscapes, for full body and head-and-shoulders portraits, for close sports and for a huge range of other uses.
For many, their first general purpose lens is the one available in-the-box with their first DSLR. While the kit lens is very economical, it is likewise the source of many emails I receive – peculiarly when being used indoors without a flash. If at that place is any subject movement, the max discontinuity available on these lenses is not wide enough to allow the action to be stopped – resulting in motion-blurred images.
The Sigma 17-l OS’ stock-still f/2.8 max aperture across the unabridged focal length range provides 4x as much light to the sensor (2 stops) equally virtually kit lenses offer at their longest focal length (f/v.6). This discontinuity difference can interpret into a big divergence in your image quality.
At that place are many lenses with longer focal length ranges available. The longer focal length lenses oftentimes sacrifice image quality to obtain their range and most do not offering the fixed f/2.viii max aperture across the entire range. There are, notwithstanding, many 17 to 50mm (or 55mm) f/ii.viii lenses available from other manufacturers – I’ll reference some of these afterwards in this review.
As I indicated already, a wide aperture is a great reward for a lens to take. Use the wide aperture to stop activeness (or camera motility) in low calorie-free by assuasive a faster/shorter shutting speed and/or to blur the background. (a wider aperture results in a shallower depth of field – all other factors remaining equal). At 17mm, yous are going to need a close field of study to generate whatsoever significant groundwork blur at 17mm f/2.eight, simply, at 50mm, blurring the background becomes an easier accomplishment.
If your subject is non moving, the Sigma 17-50’southward 4-cease-rated OS (optical stabilization) will be a smashing help in achieving precipitous handheld shots in low light, in the wind, on unstable footing, on a gunkhole … and in other situations where holding a camera steady is difficult and a tripod is non being used.
At 17mm, I am getting a skilful rate of sharp images from the Sigma 17-50mm f/two.eight EX DC OS HSM Lens at 1/4 sec exposures for a net three-stops of assistance from OS. I accept some sharp shots taken at .6 and .8 seconds, simply the keeper rate is very, very low at these exposure durations. At 50mm, one/x or 1/eight seems to be my shutter speed limit for precipitous images. This is, again, a net three-stops of assistance from Bone. I have a couple of sharp images fabricated at 50mm and one/five sec, but the keeper rate is very low.
The Sigma 17-50mm f/2.viii EX DC Os HSM Lens is shown mounted on a Canon EOS 60D above.
With a wide open f/2.8 aperture, the Sigma 17-50mm f/ii.8 EX DC Bone HSM Lens is impressively precipitous in the eye throughout the focal length range with 50mm showing very slightly reduced sharpness. The corners are soft at f/ii.8 with the 50mm corners looking the all-time. Stopping downward does not significantly touch the center of the frame image quality – nor does it need to.
By f/5.6, corners show a piddling improvement overall and improvements are once again realized at f/8. Stopping downwards at 50mm, the heart shows slightly more than improvement and the corners testify somewhat less improvement than the balance of the range – due to the slightly worse/better 50mm f/2.viii center/corner sharpness. At f/11, diffraction begins to show – reducing paradigm sharpness over nearly of the frame (though corners go along to ameliorate).
The Sigma 17-50 OS controls vignetting quite well. With a wide open discontinuity, look to see about 1.5 stops of peripheral shading in the corners at the two focal length extremes with noticeably less in the mid focal lengths. Stopping down to f/4 reduces the corner shading to about 1 terminate at 17mm and about .8 stops remain at 17mm fifty-fifty at f/xi. Note that a normal thickness circular polarizer filter will add a small corporeality of mechanical vignetting at 17mm – even at f/11.
Some chromatic aberration is noticeable in the corners in the wider one-half of the focal length range. Every bit a generalization, CA is worst at 17mm and slowly improves through the residue of the focal length range. The amount of CA exhibited is not unusual for a lens in this class.
The Sigma 17-50 OS shows varying amounts of flare over the focal length and aperture ranges, but overall, it is a decent performer in this regard. Bokeh (background blur quality) generated by the 7-blade aperture appears to exist mid-class. The odd number aperture blade count will create 2x the number of low-cal rays as aperture blades (fourteen) from points of low-cal when a narrow aperture is used (even blade counts evangelize 1x low-cal rays).
At 17mm, the Sigma 17-l exhibits a noticeable bulge-in-the-middle barrel distortion. This distortion smoothly transitions to mild pincushion baloney at 50mm with approximately 25mm existence the virtually-distortion-free transition focal length.
Overall, I’thousand pleased with the Sigma 17-50mm f/2.8 EX DC OS HSM Lens’ image quality, though the corner sharpness is the virtually lacking piece of the overall epitome quality puzzle.
The Sigma 17-50 Os incorporates Sigma’s (Hypersonic Motor) for moderately fast autofocusing. Though reasonably quietly, the 17-50 generates some gear noise during AF. Focus accurateness has been the biggest issue I’ve encountered with this lens. I’ve had many shots misautofocused for no credible reason – especially in AI Servo mode.
Focusing is internal – the front element does not extend or rotate. Expect a relatively small amount of focus breathing from this lens – the subject/framing changes size a pocket-sized amount when focusing.
FTM (Full Fourth dimension Manual) focusing is not featured in this HSM AF implementation – the focus ring turns during AF. A printed-on-the-MF-band focus distance scale is provided – and reveals the lack of FTM.
The focus band is nicely sized and in the position I adopt – equally the front-most band. The Sigma 17-50 focuses smoothly, but with a relatively brusk 42° rotation and low rotation resistance, precise focusing is touchy.
The table below reviews a large number of full general purpose lenses’ minimum focus distances and maximum magnifications.
|Canon EF-S 15-85mm f/three.5-5.6 IS USM Lens||13.8″||(350mm)||0.21x|
|Canon EF-S 17-55mm f/ii.8 IS USM Lens||13.eight”||(350mm)||0.16x|
|Canon EF-S 17-85mm f/4-five.6 IS USM Lens||11.8″||(300mm)||0.20x|
|Canon EF-Due south 18-55mm f/3.5-v.half-dozen IS Two Lens||nine.8″||(250mm)||0.34x|
|Canon EF-S eighteen-135mm f/3.v-5.half dozen IS Lens||19.iii”||(490mm)||0.21x|
|Canon EF-S 18-200mm f/iii.5-5.6 IS Lens||17.7″||(450mm)||0.24x|
|Sigma 17-50mm f/2.8 EX DC Os HSM Lens||11.0″||(280mm)||0.20x|
|Sigma 17-70mm f/ii.8-iv DC Macro OS Lens||8.vii”||(220mm)||0.37x|
|Sigma 18-125mm f/3.viii-v.half-dozen DC OS HSM Lens||13.viii”||(350mm)||0.26x|
|Sigma 18-200mm f/3.5-6.three DC OS Lens||17.7″||(450mm)||0.26x|
|Sigma 18-250mm f/3.5-six.3 DC Bone HSM Lens||17.7″||(450mm)||0.29x|
|Tamron 17-50mm f/2.8 XR Di Ii Lens||10.6″||(270mm)||0.22x|
|Tamron 17-50mm f/2.8 XR Di II VC Lens||xi.4″||(290mm)||0.21x|
|Tamron 18-200mm f/three.5-6.3 XR Di Two Lens||17.7″||(450mm)||0.27x|
|Tamron xviii-270mm f/3.5-6.3 Di Ii VC Lens||19.iii”||(490mm)||0.29x|
With an xi” (280mm) MFD and a .2x MM spec, the Sigma 17-50mm f/2.8 EX DC Os HSM Lens is not a strong contender in the close-up competition. But, these specs are in line with the other 17-fiftysomething f/2.8 lenses. And, these figures are expert enough for many close field of study needs.
However, that is not the end of the shut-up story. The tested MFD for this lens is 9.17” (233mm) which should equate to about .24x MM. MFD testing uses manual focusing – and this lens indeed manually focuses closer than it will autofocus.
As I mentioned in the beginning of this review, the Sigma 17-50mm f/2.eight EX DC Bone HSM Lens has very good build quality. I have not been a big fan of Sigma’s matte finish – peculiarly because it readily shows fingerprints and dust. The good news is that only the edges of the zoom and focus rings retain the conventional Sigma end. The hood and mount areas, the main lens areas not covered by safety zoom or focus ring, are a much nicer (my opinion of course) smooth finish.
The focus and zoom rings are very smooth with no play. The zoom ring has an platonic amount of resistance while, as I indicated earlier in the review, the focus ring is slightly too easy to rotate.
Like all other zoom lenses in its class, the Sigma 17-fifty OS extends when zoomed to its longest focal length. There is very piddling play in the extending portion of the barrel.
My purchased-retail copy of this lens does not exhibit gravity-zooming behavior, only a lock switch is provided to assure the lens stays retracted at 17mm. The other ii switches – AF/M and Os On/Off are noticeably raised from the lens barrel. These switches are located shut enough to the lens mountain that they are non uncomfortable during use, but they are like shooting fish in a barrel to detect with your left pollex.
The relatively pocket-size lens hood is large enough to help go on fingers and other objects from touching the front element. The Sigma center-and-side-pinch lens cap is very nice and is easy to install or remove with the hood in identify.
|Model||Weight||Dimensions w/o Hood||Filter||Twelvemonth|
|Canon EF-S 15-85mm f/3.v-5.6 IS USM Lens||20.3 oz||(575g)||iii.two x 3.4″||(81.6 10 87.5mm)||72mm||2009|
|Canon EF-S 17-55mm f/2.8 IS USM Lens||22.eight oz||(645g)||iii.three x 4.4″||(83.v ten 110.6mm)||77mm||2006|
|Canon EF-South 17-85mm f/4-five.6 IS USM Lens||sixteen.8 oz||(475g)||3.1 x 3.6″||(79 ten 92mm)||67mm||2004|
|Canon EF-S xviii-55mm f/iii.5-five.6 IS Ii Lens||7.i oz||(200g)||2.7 ten 3.three”||(68.v ten 84.5mm)||58mm||2011|
|Catechism EF-South 18-135mm f/3.5-v.6 IS Lens||16.1 oz||(455g)||3 ten 4″||(75.4 x 101mm)||67mm||2009|
|Canon EF-S 18-200mm f/3.5-5.half-dozen IS Lens||21 oz||(595g)||3.ane x 4″||(78.vi 10 102mm)||72mm||2008|
|Sigma 17-50mm f/2.8 EX DC Bone HSM Lens||19.9 oz||(565g)||3.3 x 3.6″||(83.5 x 91.8mm)||77mm||2010|
|Sigma 17-70mm f/ii.8-4 DC Macro OS Lens||18.ix oz||(535g)||3.1 x 3.5″||(79 ten 88.9mm)||72mm||2010|
|Sigma 18-125mm f/three.8-5.half dozen DC OS HSM Lens||17.8 oz||(505g)||2.9 x 3.5″||(74 ten 88.5mm)||67mm||2008|
|Sigma 18-200mm f/iii.v-6.3 DC Bone Lens||21.5 oz||(610g)||three.1 x 3.nine”||(79 x 100mm)||72mm|
|Sigma 18-250mm f/iii.5-half-dozen.iii DC OS HSM Lens||22.two oz||(630g)||3.i x 4″||(79 10 101mm)||72mm||2009|
|Tamron 17-50mm f/2.viii XR Di II Lens||15.iii oz||(434g)||3.2 ten 2.ix”||(81.7 x 74mm)||67mm||2006|
|Tamron 17-50mm f/two.8 XR Di II VC Lens||xx.one oz||(570g)||three.ane x iii.seven”||(79.6 x 94.5mm)||72mm||2009|
|Tamron eighteen-200mm f/3.5-vi.3 XR Di II Lens||xiv oz||(398g)||ii.9 x iii.3″||(73.eight x 83.7mm)||62mm|
|Tamron 18-270mm f/iii.5-6.3 Di Ii VC Lens||nineteen.4 oz||(550g)||3.1 x 4″||(79.half dozen x 101mm)||72mm||2008|
For many more than comparisons, review the consummate Sigma 17-50mm f/2.viii EX DC Bone HSM Lens Specifications using the site’south Lens Spec tool.
The Sigma 17-50 OS is in the middle of its form in the size and weight categories. I detect a lens with this size and weight to exist easy to have with you, comfy to use and to have enough mass to be stable.
The 77mm filter size is not pocket-size, only information technology is very common – making the sharing of sure filters like shooting fish in a barrel (no step-up rings required).
Here is a visual look at some of the above-referenced lenses.
Positioned above from left to right in their fully retracted positions are the following lenses:
Catechism EF-S xviii-55mm f/3.5-5.half dozen IS II Lens
Tamron 17-50mm f/2.8 XR Di II Lens
Sigma 17-50mm f/ii.8 EX DC Bone HSM Lens
Tamron 17-50mm f/ii.viii XR Di Two VC Lens
Catechism EF-Due south 17-55mm f/two.8 IS USM Lens
The same lenses are shown below in their fully extended states with their lens hoods in place.
You tin can create your own comparisons using the Sigma 17-50mm f/2.8 EX DC Os HSM Lens Image Comparing. Here is i more comparison – click on the image below to compare the Sigma 17-50mm f/2.8 EX DC OS HSM Lens to other lens models with and without hoods (opens in new window to salve your place in this review).
Let’s review some outdoor results from a choice of like lenses. To comparing test outdoors, a clear day is the first requirement. Whatsoever clouds in the sky, even if they appear to be fifty-fifty, can change the lighting betwixt shots and cause one lens to appear better or worse than it is.
The start comparison examination results I am sharing are from the absolute elevation left corner of the frame out of a Canon EOS 60D using the Standard Motion-picture show Style and a sharpness setting of “1” (very low). Lenses were gear up to approximately 28mm. The aforementioned tripod-mounted camera position was used, but this does not mean identical corner framing due to lens focal length marking discrepancies and my guess at the focal length setting on lenses not having 28mm marked.
Specific image content bated, I recall that you will be able to discern a reasonable departure betwixt the lenses in this case. These 28mm results are generally indicative of the operation of these lenses over their unabridged focal length range.
Note that, to reduce page load fourth dimension (especially for mobile users), this comparison is being hosted on a separate page. Click on the image beneath to open this comparison in a new window. Read the comparing discussion on that page.
If you read the discussion on the comparison page, skip down to the “mounts” paragraph.
With wide open apertures, the Canon EF-Due south 17-55mm f/2.8 IS USM Lens and the impressive-for-the-price Tamron 17-50mm f/2.8 XR Di Two Lens (non-VC) turn in the best corner performance.
The Sigma 17-50mm f/2.8 EX DC Os HSM Lens indeed turned in better corner functioning at a wide open up discontinuity than stopped downwardly one or maybe fifty-fifty two stops in this test. This of course ways the other lenses are better performers at f/4 and f/five.6 with the Sigma 17-70 being a possible exception.
The Sigma 17-70 would better fit in a difference class of lenses due to its narrower aperture and longer focal length range, but including it here shows me what information technology can exercise as I prepare to write the Sigma 17-70mm f/2.viii-four DC Macro OS Lens review.
With calorie-free being least redirected in the center of their image circles, nearly lenses perform best in the center of the frame. As I said before in this review, the Sigma 17-50mm f/2.viii EX DC OS HSM Lens turns in very impressive center-of-the-frame operation. Even at its center image quality weakest focal length, 50mm, the Sigma performs on par with the Canon 17-55 (which is set to 55mm in the following comparison). Once more, click on the image to see the comparison.
The higher up comparison images were shots with the Canon EOS Rebel T3i/600D using the Standard Movie Fashion and a sharpness setting of “i” (very depression). The Sigma 17-l shows a more-clear reward in the center of the frame at the lower terminate of its focal length range.
One difference I’ve noticed in the various comparing tests I’ve shot is that the Sigma 17-50mm f/ii.8 EX DC Os HSM Lens consistently produces warmer image colors than the Canon 17-55. I’ve actually preferred the warmer image in the majority of comparisons I’ve noticed this divergence in.
From a flare standpoint, the Sigma 17-l Os compares favorably to the residual of these lenses. Peradventure slightly amend overall than the Canon 17-55 and the Tamron 17-l non-VC. The Tamron 17-50 VC is the articulate loser in the flare contest.
The Sigma 17-50 Bone and the Tamron 17-fifty non-VC lenses showroom the to the lowest degree vignetting with the Canon 17-55 and the Tamron 17-fifty VC showing the most.
The Canon EF-S 17-55 has less barrel distortion at 17mm than the other lenses, simply more than pincushion distortion at longer focal lengths. The other lenses are similar in their baloney amounts. I didn’t see any significant differentiators from a CA standpoint – these lenses are all like in this regard.
The Canon 17-55 wins the AF performance category – this is a big advantage in my opinion. The Canon 17-55, nonetheless, is the loser in the price comparison. Information technology costs far more than the Sigma 17-50. The Sigma 17-50 is slightly more expensive than the Tamron 17-50 VC, simply the meliorate-optically-performing Tamron 17-50 non-VC is considerably less expensive. It, of form, lacks paradigm stabilization – some other big reward in my opinion.
The Sigma 17-50mm f/ii.8 EX DC OS HSM Lens is available in Canon (reviewed), Nikon, Pentax, Sony/Minolta and Sigma
mounts. My standard disclaimer: There are some potential bug with third party lenses. Since Sigma reverse engineers (vs. licenses) manufacturer AF routines, at that place is always the possibility that a DSLR trunk might not support a (probable older) third party lens. Sometimes a lens tin be made compatible by the manufacturer, sometimes non. At that place is also the hazard of a problem that results in the lens and trunk manufacturers directing blame at each other. Sigma United states of america’south 4-year warranty is far superior to Canon’south standard 1 year warranty (Sigma’s international warranty is too 1 yr).
If y’all don’t demand sharp corners (except at f/xi) and y’all don’t demand every shot focused perfectly, the Sigma 17-50mm f/2.8 EX DC Bone HSM Lens is a smashing lens for the price. This is a good upgrade-to-the-kit-lens option.
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