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Sigma DG 28-105mm F2.8-4 Review RSS Feed

Sigma DG 28-105mm F2.8-4

Sharpness 
 7.0
Aberrations 
 8.0
Bokeh 
 8.0
Handling 
 8.0
Value 
 9.0
Autofocus 
 7.5
Reviews Views Date of last review
2 24,564 Mon November 23, 2015
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Recommended By Average Price Average User Rating
100% of reviewers $157.50 9.00
Sigma DG 28-105mm F2.8-4

Sigma DG 28-105mm F2.8-4
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Sigma DG 28-105mm F2.8-4
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Sigma DG 28-105mm F2.8-4
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Description:
"Sigma Corporation is pleased to announce the launch of the new 28-105 F2.8-4 DG lens. This large aperture standard zoom lens provides superior performance both for Digital SLR Cameras and 35mm Film SLR Cameras. This standard zoom lens covers frequently used focal lengths from 28mm to 105mm and allows a large aperture of F2.8 at the 28mm focal length. It is very convenient for a wide range of applications including snap shots, indoor photography. The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras, and also creates an optimum color balance throughout the entire zoom range. The use of aspherical lens reduces various aberrations throughout the entire zoom range and improves optical performance. This lens has minimum focusing distance of 50cm (19.7 inches) throughout the entire zoom range and it has also maximum magnification of 1:5.5. Because the front of the lens does not rotate, circular polarizing filters and a petal-type hood can easily be used."

There are several incarnations of the Sigma 28-105mm:

sigma 28-105mm f4-5-6 UC ii.
Sigma 28-105mm f3.8-5.6 UC iii
Sigma 28-105mm F2.8-4
Sigma 28-105 2.8-4 DG


Weight: 430g
Filter Diameter: 72mm
Min. Focus: 33cm /13 in
Horizontal FOV: 75.4 - 34.3 degrees
Horizontal FOV on Digital: 50.3 – 22.9 degrees
Min. Aperture: F22
Iris: 8 blades.
Optical Construction: 14 Elements in 12 Groups
Max magnification: 1:5.5
Autofocus: Yes, screwdrive
Mount Type: Pentax KAF2/KAF (screwdrive AF)
Price History:



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Author:
Sort Reviews by: Date | Author | Rating | Recommendation | Likes (Descending) Showing Reviews 1-2 of 2
Senior Member

Registered: August, 2008
Location: St. Louis, MO
Posts: 141
Review Date: November 23, 2015 Recommended | Price: $165.00 | Rating: 9 

 
Pros: Good fast lens for the price,
Cons: Not as sharp as more expensive glass
Sharpness: 7    Aberrations: 8    Bokeh: 8    Handling: 8    Value: 9    Camera Used: Pentax K5 & K3    Autofocus: 8   

This was the first lens I obtained when I bought my first Pentax DSLR. I had one when I was shooting with a Canon film camera.

For the price this lens is really fast. F2.8 at the wide end and only dropping to F4 at the telephoto end. When you consider the price this lens is super reasonable. Sometimes I wish it were a bit sharper, but at this price point it's a pretty decent.

With the 1.5X crop factor, 28 isn't really wide angle enough to shoot a lot of indoor scenes but if you can live with that and the fact that it isn't super sharp, it's an awesome lens.
   
New Member

Registered: October, 2014
Posts: 14

1 user found this helpful
Review Date: March 2, 2015 Recommended | Price: $150.00 | Rating: 9 

 
Pros: cheap, decent build, sharp stopped down
Cons: not wide in crop, slow focus in poor light
Sharpness: 7    Aberrations: 8    Bokeh: 8    Handling: 8    Value: 9    Camera Used: k50, k200    Autofocus: 7   

This lens is a very good buy, heavy lens but not to much heavy, is built like tank , although it’s not water proof and not having seal on it, it feel solid to turn the zoom and my copy is the one with a black mate colour (Sigma have a 3 different black colour type) It comes with both lens cap and a hood. The hood is very useful in shoot a day light.
It’s not a very perfect quality of glass, but it will be great for “everyday lens”. In f2,8 stop it can produce nice swirl bokeh and consider the DA 16-50 is little bit expensive for me to catch, this lens is reasonable to buy. It’s a big value for money if you want to get all round lens compared with tamron 28-75 or DA 16-50, they both have 2,8 constant aperture but the price is much higher than this lens.
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