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Sigma AF 18-50mm f/2.8 EX DC Macro : Specifications and Opinions

Sigma AF 18-50mm f/2.8 EX DC Macro

The Sigma AF 18-50mm f/2.8 EX DC Macro is a standard lens for APS-C, manufactured from 2006 to 2010 (discontinued). The focus is done by Lens AF motor (non-ultrasonic), it does not have image stabilization. The average price, when it has been added to the JuzaPhoto database, is 400 €;

11 users have given it an average vote of 8.5 out of 10.

Specifications
Focal lenght	18-50 mm
Angle of view	77.3 - 32.1° (equivalent to a 27-75mm in Fullframe 24x36mm format)
Format	APS-C
Max. aperture	f/2.8
Aperture blades	7
Lenses/Groups	15 elements in 13 groups
Min. focus distance	0.20 meters
Reproduction ratio	0.33x
Features
Zoom type	Ring, external
Stabilization	No
Focus	Lens AF motor (non-ultrasonic)
Internal Focus	No
Built and notes
Tripod ring	No
Extenders	No
Filters	72 mm
Lens hood	Yes, supplied
Weather sealing	No
Weight	450 g
Dimensions	79 x 86 mm
Buy
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Reviews

What do you think about this lens?

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The following opinions have been automatically translated with Google Translate.

Kairy204

sent on April 14, 2024

Pros: Cost in Used, Focal Range, Constant 2.8, Weight, Macro

Cons: Construction, sharpness from f/4 down, slow and noisy, sometimes inaccurate autofocus. Unusable in low light.

Opinion: Taken to replace the 18-55 kit on my Canon 70D. For a novice photographer it is a good lens, especially if we consider the fact that you can now find even under 250, which for a standard 2.8 lens for aps-c is a great price. In addition, the size and weight are quite small. The strengths, however, end there. In my opinion, this is not a lens that can be used at a professional level due to the outdated, slow, noisy and inaccurate autofocus, especially in low light. Not very good sharpness below average apertures. The build isn't that of high-end lenses, and it doesn't feel like you're holding a particularly solid lens. The macro function is good and allows you to take home pretty photos.

Vefazi

sent on February 17, 2024

Pros: Good lens to replace the kit one. Good brightness at all focal lengths Robust construction

Cons: It's a bit poor in backlight, not very precise and noisy focus, barrel distortion especially at the minimum focal length

Opinion: I've owned it for many years now and it still does its job with my dated Canon EOS 50D, which is also very old but for now I wouldn't replace it with the new Canon M system that still doesn't convince me. It is a very good lens both for its brightness at all focal lengths, and for its versatility on almost all occasions. It's sharp and quite defined throughout the frame, although in my opinion it looks much better at medium apertures, especially between f/4.0 and f/8, A f/2.8 has a really nice blur and therefore suitable for portraits. It gave me some problems in backlighting, but not being very fond of this type of photography, it is certainly my fault. Don't expect high performance on the autofocus, as the lens is not ultrasonic, the slow speed and noise are noticeable. The front lens is quite exposed. It must therefore be protected to avoid scratches or worse, better with a rigid lens hood, especially if those like me who do not like to add other glass in front of the lens such as UV filters etc. I recommend it both for the price, and for the fact that when compared to the kit lenses it is definitely the top (even if the kit lenses should not even be compared to certain lenses)

Buck81

sent on September 16, 2019

Pros: Construction,Robustness,definition,general yield,constant opening f2.8,blurred pleasant.

Cons: On some occasions, there is little resistance to backlights. Focus a little noisy. Focus that rotates in AF.

Opinion: Optical taken for "two lire" to be mounted on a Pentax K3. I didn't expect much, given the age of the project and knowing the past Sigma reliability. Well... I soon had to think again!! Used on a number of occasions and, really, never let me down. Almost certainly, I was lucky with this specimen,but the sharpness, the definition on the whole frame (even at TA), is really remarkable. The ACs, there are, but they're correctable. An 18mm hair of distortion, but nothing dramatic or unrecoverable. The zoom dial flows smoothly, without hinting. In landscape photos, it behaves well from f4 onwards. In portraits, 2.8 is really SUPERB. Details in large quantities and a really nice detachment of the floors. Generally, in the backlights, it does not create problems (I love to take portraits in the light of sunset), but I happened to take some landscape photos at a sunset and I noticed that in some image, or rather, in some angle, a very bad reflection appears impossible to correct. But given the age of the project and the cost, I think it's more than acceptable to have some compromise. The focus, well... it does not have an AF engine, so its speed and partly its silence, depend on the reflex on which it is used. Pentax, you know, certainly doesn't shine on the AF side, yet it's quite quiet and precise on all occasions. Even the most difficult ones, like a backlight or the like. On average, the percentage of shots lost is 2%. Like the other photographic systems I had previously (Canon,Nikon,Fuji) and used in a very similar way. The construction, it's solid. Robust. The only negative note,is the opaque coating,which personally, I do not like very much; gives me the impression that it "attracts" the dust. But maybe it's just suggestion. The weight, of course, is compared (for example) to a Fuji 18-55 2.8-4. But we're looking at a zoom optics f2.8 FIXED... Many builders don't know how to do much better. I mean, dated optics, sure. But definitely valid to replace the classic kit lens... and make an abysmal leap in quality, because with kit optics, nothing has to be shared (if not focal), as it is much superior. He plays it quietly with more emlasic optics. Honest dimensions; he's fine on a slad. Beautiful to see,fluid ghiere, great sharpness,blurred pleasant.... for that little money it costs, to have absolutely!!

Michele06

sent on October 26, 2017

Pros: Brightness, robustness

Cons: Focusing on low light difficulty (coupled with external flash), failure to stabilize

Opinion: I have this lens for more than a year and with the passing of days I'm getting more and more defects. By doing a substantial use with low light the shutter 8 times out of 10 is out of focus. Instead, for optimal light conditions it is also great at maximum aperture and the focus though not being ultrasonic is very accurate. Recommended for those looking for an economical substitute for the base kit.

Balsa85

sent on January 18, 2014

Pros: Good build quality from f.9 is perfect to f2.8 is good, even at night

Cons: focus ring is difficult to operate, the rest is a great lens to replace the kit

Opinion: I took this view for two months and I must say it is a good quality lens, I replaced the 18-55 kits, the difference is more accurate af, at f2.8 allows fuzzy good night behaves well, neutral color, it offers a nice yield from f.9 already, I recommend it as a first lens in place of the kit is located at good prices.

There are 2 more reviews. Show all »

Photos taken with Sigma AF 18-50mm f/2.8 EX DC Macro

Looking for the grain

by Vanni T.
26 comments, 5215 views

HI RES 21.3 MP

Moved that I take the sun

by Vanni T.
20 comments, 3490 views

HI RES 24.0 MP

A chat on the pier

by Maurog74
27 comments, 552 views

HI RES 18.9 MP

Want to leave

by Alessandro1124
25 comments, 3642 views

Among the branches

by Vanni T.
17 comments, 2213 views

HI RES 24.0 MP

Yet beneath the river flows

by Alessandro1124
39 comments, 2574 views

HI RES 3.2 MP

Evening Alpe di Siusi

by Alessandro1124
19 comments, 4941 views

Macchia plays and jump: D

by Vincenzospoglia
11 comments, 1690 views

HI RES 12.2 MP

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A second color of fire

by Vanni T.
17 comments, 1488 views

HI RES 24.0 MP

W The Nature 2

by Bfasuper
12 comments, 2249 views

The launch

by Paola76
23 comments, 1581 views

HI RES 12.2 MP

Lost in thought

by Vincenzospoglia
3 comments, 2807 views

The river enchanted

by Alessandro1124
27 comments, 2173 views

The Lodge and the rain

by Maurog74
27 comments, 1243 views

HI RES 3.8 MP

Untitled Photo

by Alessandro1124
10 comments, 1710 views

Aurora

by Vincenzospoglia
4 comments, 2757 views

HI RES 12.2 MP

Autumn blaze of color ....

by Vanni T.
11 comments, 1361 views

HI RES 23.4 MP

The plot

by Vanni T.
13 comments, 1307 views

HI RES 24.0 MP

Granny photographer ...

by Marpe1962
12 comments, 1751 views

HI RES 8.0 MP

Falls the world

by Vanni T.
6 comments, 1557 views

HI RES 15.1 MP

Mountain reflections

by Maurog74
27 comments, 840 views

HI RES 3.8 MP

Sunset at Diamante #2

by Andreaf948
17 comments, 340 views

HI RES 18.0 MP

Lying on the railing

by Vincenzospoglia
7 comments, 2503 views

Sailing in a sea of dunes

by Champlain
5 comments, 850 views

A moment before ...

by Alessandro1124
12 comments, 1775 views

Fuego

by Vanni T.
0 comments, 818 views

HI RES 24.0 MP

Isle Of Bitches

by Bfasuper
11 comments, 1520 views

Endless Pink

by Maurog74
35 comments, 916 views

HI RES 3.8 MP

Roots

by Alessandro1124
7 comments, 1233 views

Untitled Photo

by Paola76
9 comments, 1694 views

HI RES 12.2 MP

Pola

by Paola76
3 comments, 1364 views

HI RES 12.2 MP

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The Blue hour Piazza San Carlo

by Maurog74
20 comments, 706 views

HI RES 3.8 MP

Waiting for the rain

by Alessandro1124
12 comments, 1473 views

1000 miles 2019

by Maurog74
4 comments, 497 views

HI RES 3.8 MP

The walkway

by Paola76
8 comments, 1174 views

HI RES 11.5 MP

Gran Paradiso C.Reale

by Massimo Morrocchi
5 comments, 1332 views

HI RES 4.8 MP

The White dressed in pink

by Alessandro1124
9 comments, 1301 views

The sample photos are selected automatically between all photos posted by JuzaPhoto members, using the camera and the lens selected in the techs. If you find evident errors (e.g. photos taken with cameras and lenses that are not available yet), you can contribute to improve the page by sending a private message to the user that has entered incorrect values in the photo caption.

Reviews » Lenses » Lenses Sigma » Sigma AF 18-50mm f/2.8 EX DC Macro

Sigma AF 18-50mm f/2.8 EX DC Macro : Specifications and Opinions

Buy

Offerte Usato RCE

Reviews

What do you think about this lens?

Photos taken with Sigma AF 18-50mm f/2.8 EX DC Macro