Lenses
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Specifications:
| Manufacturer | Sigma |
|---|---|
| Model | 18-50 mm f/2.8-4.5 DC OS HSM |
| Lens style | Universal zoom |
| Focal length | 18 - 50 mm |
| Maximum aperture | f/2.8 - 4.5 |
| Angle of view | 69.3 - 27.9 o |
| Closest focusing distance | 0.3 m |
| Maximum magnification | 1:4.1 |
| Minimum aperture | 22 |
| Number of diaphragm blades | 7 |
| Auto focus type | HSM |
| Lens Construction | 16 elements / 12 groups |
| Filter diameter | 67 mm |
| Macro | No |
| Available mounts | Canon EF Nikon F Sony A / Minolta Sigma Pentax K |
| Dimensions | 74 x 88.6 mm |
| Weight | 395 g |
| Additional information |
Average rating (8 owners reviews).
| Build quality | 4.75 |  |
|---|---|---|
| Optical quality | 3.63 |   |
| Value for money | 4.75 | |
| Overall | 4.38 | |
| Build quality |  |
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Owner since: 1 year
Price: 200€
User profile: Professional
Cons: a lot of optical disadvantages, if you use this lens outdoor at 18 or 50mm wide open, ok from 24 too 35mm
Pros: but my standard studio lens between 24 and 35mm at f8 too f11, best handling, no extension, stabilisized and fast and excact AF
Summary: best value if you look for a studio lens between 24 and 35 for aps-c (except productfotos)
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Owner since: 1 year
Price: 190EUR
User profile: Semipro
Cons: Corner sharpness, variable aperture
Pros: Stabilizer, F 2.8..
Summary: Excellent center sharpness, absolute best stabilized lens for the money!
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Owner since: 6 months
Price: $200
User profile: Semipro
Cons: A bit soft at 18mm@2.8, but can sharpen up in Photoshop
Pros: Hard to beat for the money, I use on both my 20D and T2i, am very satisfied
Summary: Great buy
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Owner since: 1 year
Price: CHF 275
User profile: Amateur
Cons: Prone to flaring with pictures into the sun or with night pictures with bright lights
Pros: Excellent build quality Accurate ultrasound autofocus Reasonable stabilisation Landscape shots f2.8 at 17mm
Summary: 1700 pictures taken. Great for landscapes. Given the price a very good lens
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Owner since: 1 year
Price: $200
User profile: Amateur
Cons: color fringing at 18mm-21mm, corner softness at wider focal range, 18mm @ f2.8 isn't sharp enough, only 50mm zoom end, focus ring feels loose, slight vignetting,
Pros: fast, quiet HSM, accurate AF, smooth damped zoom ring, self contain zooming, no extension, great build quality with solid feel, comes with a nice lens hood, great pictures at all focal range @ f4 to F11, no flaring issues,
Summary: a very good upgrade from the kit 18-55mm kit lens. useful f2.8 for low light situation, and only f4.5 at tele end, great solid construction, very accurate fast AF HSM. great buy and good optics for $200
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Owner since: 1 month
Price:
User profile: Amateur
Cons:
Pros:
Summary: sorry, very small dist.
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Owner since: 1 month
Price: 190 us dol
User profile: Amateur
Cons: very small dist. inner zoom at this price band.
Pros: its value lens per cost.
Summary: at ex-wide, very short compare with camera maker.
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Owner since: 1 month
Price: 330eur
User profile: Amateur
Cons: image quality
Pros: Price, stabilisation, aperture
Summary: image quality are very poor compare to the sigma 50-150 f2,8
