NOTE: this is for crop sensor (DX) Alpha cameras only.
The Sigma 10-20mm lens provides an excellent ultra-wide solution for shooters of crop frame cameras. With 3 low dispersion and 2 aspherical elements, it provides excellent control of chromatic aberration and low distortion. It has a hypersonic motor for rapid autofocus and is completely internally focusing with a non-rotating barrel, so a circular polarizer is easy to use.
Sigma 8-16 f/4.5-5.6 is the widest (and remember, 8mm is 20% wider than 10mm, so it’s a very real difference). Not quite as sharp in the corners as the others, and lower maximum aperture, but it’s really pretty good, especially considering it’s the widest of the wide.
The Sony 11-18mm is a decent lens, although it really isn’t sharp wide open. It needs to be stopped down a stop to give you the images most of us want. It’s nice and small, which is important when you’re only carrying an ultra-wide in the bag “just in case” you need it. Overall, a decent, but not a great performer.
The Sigma 10-20mm f/4-5.6 has a bit larger range and provides excellent image quality, although it has a bit of barrel distortion at the wide end, fits no worse than the Sony. It’s quite sharp in the center even wide open, a bit less so in the edges until f/5.6 or f/8. It’s internally focusing, so if you plan on using a circular polarizer (not always the best idea on an ultra-wide), you might prefer this one. Plus, it’s a good price.
But, like I said above: they’re all excellent. We hardly ever get anything but happy comments about any of them.
Try and Buy Program: Lensrentals is pleased that our friends at SuperdigitalCity have made a special offer for our customers renting this item and considering purchase. Simply email your Lensrentals Invoice number to SuperdigitalCity and they will email you back a coupon code good for $21 off of the Sigma 10-20 f/4-5.6 lens.
- Filter Size
- 1.0 lb.
- Included, no part number
- Minimum Focusing Distance
- 0.75 feet
- Maximum Magnification
- Angle of view: (4/3 frame)
- 102 to 63 degrees
- Zoom method
- Barrel extending, nonrotating
- Image Stabilization
- Focusing System
- Internal, full-time manual, Hypersonic motor
- Aperture Blades
- 6 curved
- Aperture Change
- f/4 < 10mm; f/4.5 @ 12mm; f/5.6 >14mm
- Low Dispersion Elements
- Aspherical Elements
- Weather Resistant
- Flare Resistance
- very mild ghosting, very mild contrast loss
- Crop frame cameras (A350, A550, etc…)
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