Super Range
Words: Hoshang Billimoria
A large percentage of the mirrorless camera market is controlled by amateurs and enthusiasts who often prefer to have one all–in–one lens rather than several lenses. Their needs were served by several companies that made 24–200 mm and 28–200 mm zooms. Sony was the only one to have a 24–240 mm lens in its arsenal. Tamron, very recently, launched its own 25–200 mm in the market. Sigma has now launched the 20–200 mm f 3.5/ 6.3 lens making it the widest travel zoom in the market. The Sigma is for full frame cameras and is currently available with either Sony’s E mount or Panasonic’s L mount. A 10 X zoom very often requires compromises. How good is the Sigma? Read on.
Design & Build Quality
The lens is very much Sigma –well finished but understated in appearance. It weighs only 540g which is light considering its focal range. Polycarbonate has been used in the construction but the mount is made of stainless steel and there are rubber gaskets around the lens mount. The lens is weather sealed but not image stabilised. Dimensions are 77.2 x 117.5 mm. The lens, like all Sigma lenses, is made in Japan.
Key Features
The maximum aperture varies from 3.5 to 6.3. Some may find that a bit limiting but with increasing sensor quality and use of high ISOs even by professionals, this should not concern you too much. 18 elements in 14 groups constitute the lens. This includes one FLD, 3 SLD and 4 aspherical elements. The angle of view ranges from 94.5 to 12.3 degrees. The lens features a zoom lock as well as a AF/ MF switch. The minimum focussing distance is 9.8 inches at 100mm. Maximum burst rate is 15 fps with Sony bodies. Sigma’s linear HLA motor is specially built for video and assures fast and accurate autofocus. The lens provides half-life size macros and takes 72 mm filters.
Ergonomics
The lens is light and compact and therefore handles very well. It is also convenient to carry around. The focal range offered makes it very versatile as well.
Performance
The performance of this 10x lens has to take into account how difficult it is to design a high quality lens of this focal range without making it big and heavy. Clearly this lens is aimed at amateurs and enthusiasts who prefer to carry a single lens rather than a cartload. Having said that, the Sigma focusses well and quickly. The linear motor makes this easy both in stills and video. Focus breathing in video is barely audible. Yes, there is vignetting at the wide end and also some distortion but nothing to be unduly worried about. Also, corners are weak at maximum aperture. The slow maximum aperture is not a source of worry since performance at high ISOs is rather good. Flare was present but well controlled. Nice bokeh can also be achieved. Colours and contrast were also good. Overall results were rather good across the focal range. The lens, therefore, deserves a firm recommendation.
Value for Money
The 20–200 mm f 3.5/6.3 Sigma is available in the UK at 799 pounds including 20% VAT. The MRP in India is Rs 87,000. Discounts, of course, should be available. The lens is good value for money.
VERDICT
Competition for the Sigma comes primarily from Tamron’s 25–200 mm f 2.8/5.6. The Sigma has a wider range, is 35g lighter and is more versatile. On the other hand, the Tamron has a wide angle of 25 mm against the 20 mm of the Sigma. It also has a higher maximum aperture and is better in low light. If you need the 20 mm focal length, go in for the Sigma.
| PLUS | MINUS |
| Widest travel zoom Light and compact Smooth and quiet | No ISA Little slow in low light |
In the Box
- Lens
- Lens hood (LH756-02)
- Front cap (LCF -72 IV)
- Rear cap (LCR III)
- Lens pouch
Pricing: `87,000/-
