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Sigma 28-70mm f/2.8 EX DG : Specifications and Opinions

Sigma 28-70mm f/2.8 EX DG

The Sigma 28-70mm f/2.8 EX DG is a standard lens for FF and APS-C, manufactured from 2008 to 2011 (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 €;

8 users have given it an average vote of 8.4 out of 10.

Specifications
Focal lenght	28-70 mm
Angle of view	75.4 - 34.4°
Format	FF, APS-C
Max. aperture	f/2.8
Aperture blades
Lenses/Groups	14 elements in 12 groups
Min. focus distance	0.33 meters
Reproduction ratio	0.22x
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	67 mm
Lens hood	Yes, supplied
Weather sealing	No
Weight	510 g
Dimensions	74 x 87 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.

Dario70

sent on September 23, 2017

Pros: Constructive quality, acceptable price

Cons: in my opinion too "soft"

Opinion: I bought used this lens and used it on sony alpha 55; I was attracted to the affordable price and compatible with my budget (about € 200) for a 2.8 in that focal length. The main gap that led me to sell the lens was the lack of definition, especially 2.8. The reason I did was that if I have to have a 2.8 and to enjoy it I have to close at least two or three stops ... I'm losing it. For the rest I have nothing to say since weight is a parameter that you he knows it right away; if you accept it well, otherwise it is useless to buy it then complain. I conclude by saying that I am not a lover of post production and so I can not tell if we can get improvements in the white room.rn

Michele Marano

sent on November 02, 2014

Pros: Relatively low cost in comparison to the equivalent Nikkor, weight, 77mm filters, brightness, rings comfortable, build quality, focus ring one touch

Cons: Sharpness wide open, fast autofocus, zoom, front end too

Opinion: The build quality of my copy is great, I talk about the EX version with the slide on the scale of meter / foot. The ring focus can be moved axially by selecting the AF mode or M, which is convenient to not have to waste time moving the switch on the equipment and start right from the beginning to focuse on hand (or vice versa). The focus (on the D90) is quite slow, at least noisy, but accurate. The optical quality does not come close to that of the unmatched Nikkor AF-S 28-70 2.8, and is soft wide open most of the frame. Already a closing stop the situation improves noticeably to reach a high quality 5.6 aperture. The filters 77 are among the pros because the majority of the optical high-end 77 has a diameter, so it's pretty standard. The weight is enough to content. The finish of the Sigma EX series is gradually discard, but I personally do not happen, I think it depends on the conditions in cui works the camera, and having never stressed, never had a problem with the posting of the exterior trim. The petal-type hood is comfortable and functional. The built-in flash can not be used to below 50 mm because otherwise comes to create a shadow due to the elongation of the front group, which has an excessive stroke. I used this lens for three years, and I replaced it recently with the 24 2.8 AF-D, simply because I realized that I used almost exclusively to 28 mm. I recommend it to those who can not afford more expensive solutions but do not want to give up a lens to medium-high 2.8 diaphragm.

Photos taken with Sigma 28-70mm f/2.8 EX DG

Ethiopia landscape

by Marco Matarese
42 comments, 4691 views

San Giulio

by Maurizio999
19 comments, 2047 views

HI RES 27.3 MP

Minimal quiet ..

by Maurizio999
12 comments, 1373 views

HI RES 4.1 MP

Sunrise over Lake ..

by Monkey999 2.0
15 comments, 1830 views

Dominican girl ..

by Maurizio999
7 comments, 2073 views

Entertainment...

by Wechup
19 comments, 1751 views

HI RES 9.7 MP

Sunrise ..

by Maurizio999
5 comments, 1136 views

Photographer sunrises ..

by Monkey999 2.0
7 comments, 1242 views

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Sunrise from Cape Pezza

by Michele Marano
9 comments, 2156 views

Monumental Cemetery in Milan

by Maurizio999
11 comments, 1782 views

HI RES 7.7 MP

Untitled Photo

by Peter 2006
18 comments, 1125 views

Body paint

by Cecco80
5 comments, 2081 views

Ghost Boat

by Matteogerosa
3 comments, 1123 views

HI RES 24.2 MP

Dominican girl ..

by Maurizio999
3 comments, 1086 views

Taaaaxxxiiiiiii

by Paolov
9 comments, 1604 views

The Mole

by Donato Romagnuolo
18 comments, 1437 views

Monferrato

by Donato Romagnuolo
12 comments, 2350 views

Dominican girl ..

by Maurizio999
4 comments, 993 views

Non-Place: Steps

by Wechup
6 comments, 1392 views

HI RES 11.3 MP

Reflex Sing

by Elmi Sergio
8 comments, 1061 views

First attempt of the Milky Way

by Maurizio999
2 comments, 2205 views

The thoughts of dad

by Wechup
10 comments, 1145 views

HI RES 7.2 MP

The sea

by Wechup
0 comments, 1233 views

HI RES 9.1 MP

Platforms

by Wechup
0 comments, 680 views

HI RES 12.2 MP

Valley of the Blue Nile - Road Addis Ababa / Bahur Dar

by Marco Matarese
2 comments, 2086 views

Live field

by Cecconidavide
0 comments, 1114 views

Gap in the ice

by Matteogerosa
4 comments, 780 views

HI RES 19.8 MP

Lifesaver DIY

by Marco Matarese
6 comments, 1092 views

Coffee

by Cecconidavide
0 comments, 814 views

Reflex Sing

by Elmi Sergio
2 comments, 849 views

Yosemite Valley

by Paolov
7 comments, 987 views

HI RES 6.6 MP

Punta Aderci at sunset

by Marcaccio77
3 comments, 1489 views

Dance

by Desmofily
4 comments, 1567 views

Wadi rum

by Lucar_62
0 comments, 1205 views

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New York City Skyline

by Paolov
9 comments, 1523 views

The fog

by Giosam2013
10 comments, 1169 views

HI RES 6.0 MP

A tribe dancing

by Wechup
7 comments, 1101 views

HI RES 12.0 MP

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 28-70mm f/2.8 EX DG

Sigma 28-70mm f/2.8 EX DG : Specifications and Opinions

Buy

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Reviews

What do you think about this lens?

Photos taken with Sigma 28-70mm f/2.8 EX DG