Sigma 28-105mm f/2.8-4 Aspherical IF

 
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28-105mm $107
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(From Sigma lens literature) This standard zoom lens covers focal lengths from 28mm to 105mm and allows a large aperture of f/2.8 at 28mm focal length. It is very convenient for indoor or evening photography.

From 28mm wide to 105mm tele range this zoom lens has 50cm (19.7 in.) minimum focusing distance. It has also maximum magnification of 1:5.5.

The use of an aspherical lens reduces various aberrations and improves optical performance. It also allows a large aperture of f/2.8 in a compact body.

Sigma's unique four-group zoom system satisfactorily compensates for astigmatic aberration and distortion aberration throughout the zoom range. As the front of the lens does not rotate, circular polarizing filters and a petal-type hood can easily be used.

Sigma 28-105mm f/2.8-4 Aspherical IF

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Sigma 28-105mm f/2.8-4 Aspherical IF User Reviews

7.5/10 average of 2 reviews Build Quality 6.0/10 Image Quality 7.0/10
  • 5 out of 10 points and recommended by (1 reviews)
    cheap, internal focusing
    large filter size, build quality

    I used this lens with analog Minolta 505 Si Super.

    Image quality is OK for postcard format photos.

    Auto focusing is slow, noisy and sometimes lens hunts to focus. Manual focus is not to precise due to looseness of focusing ring and small range of movement between infinity and minimal focus distance.

    Zooming ring is too tight and moves not to smooth.

    On positive side is internal focusing which helps using polarized filters. However due to filter size (72 mm) filters are rather expensive.

    Overall this lens is average but for its price (especially second hand) this lens is quite good.

    reviewed November 15th, 2006
  • 10 out of 10 points and recommended by (1 reviews)
    Small size, Fast F/2.8 at 28mm, 8 blade apature, Very Sharp through zoom range. (better than my 28-200 Tamron LD ASPH IF !) Focus is fast, even lower light with assist lamp. Solid feel, and tight zoom and MF rings.
    Not F/2.8 from 28-105. But on a aps-c camera, a 168mm F/4 ain't bad!

    Pro: Small size, Fast F/2.8 at 28mm, 8 blade apature, Very Sharp through zoom range. (better than my 28-200 Tamron LD ASPH IF !) Focus is fast, even lower light with assist lamp. Solid feel, and tight zoom and MF rings.
    .
    Con: Not F/2.8 from 28-105. But on a aps-c camera, a 168mm F/4 ain't bad!
    .
    I got this lens for studio and home candids of my son. I am not at all disapointed. This lens is the same as the DG lens as far as lens construction. The DG may have a little beter correction, but I use this on Canon D60, and it has great proformance. . For a new price of $150-170. you can't go wrong. I don't know if the DG version is really an upgrade or just a re-lable. but I don't see spending the extra $30-50 for proformance on an already great proformer. not an "L" But way above the typical consumer quailty on my copy.

    reviewed January 25th, 2006 (purchased for $107)