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Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Sigma Digital SLR Cameras
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- 10-20mm focal length
- 15-30mm equivalent focal length on APS-C cameras, 20-40mm equivalent focal length on Four Thirds / Micro Four Thirds cameras, 16-32mm equivalent focal length on Canon APS-C cameras
- F4-5.6 maximum aperture; F22-32 minimum
- Ring-type ultrasonic-type AF motor with full-time manual focusing
- 77mm filters
- 0.24m/9.45" minimum focus
- Available in Canon EF, Four Thirds, Pentax KAF, Sony Alpha, Sigma SA, Nikon F (DX) mounts
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From the manufacturer
10-20 mm F4-5.6 EX DC (HSM)*
It’s important to have a high quality ultra-wide angle zoom in a lens kit. Sigma's 10-20mm F4-5.6 EX DC ultra-wide zoom lens for digital SLR cameras is ideal for landscape photography, building interiors, group and party pictures and so much more. Great for working with close foreground subjects as this lens features a minimum focusing distance of 9.4-inch at all focal lengths ensuring great creative potential. The wide angle view of up to 102º also offers greater freedom of expression.
Dimensions (Diameter x Length): 83.5 x 81 millimeter / 3.3 x 3.2 inches
Weight: 465 grams / 16.4 ounce
Since 1961, and with the recent introduction of Sigma Global Vision, we have worked toward one single, simple goal: To hold ourselves to the highest standard of design & manufacturing of imaging products. Photography is all we do. And it’s all we’ve done. So you can rest assured that it’s something we know extensively and care deeply about. You have a vision. We’ve made it our mission.
- Ultra wide angle with view of up to 102 degrees
- Internal focusing system technology
- *HSM is not available for Sony and Pentax
- Carrying case, hood, front & rear caps
|Aperture Control Design||Aperture controlled by camera|
|Compatible Mountings||Sigma SA Bayonet|
|Focus Type||Ring-type ultrasonic|
|Included Components||Lens Hood, Front & Rear Lens Caps,1 Year|
|Item Dimensions||3.31 x 3.31 x 3.19 inches|
|Item Display Weight||0.47 Kilograms|
|Item Weight||1.04 pounds|
|Lens Type||Zoom lens|
|Macro Focus Range||0.24 m|
|Material Type||Metal mount|
|Maximum Aperture Range||F4.0 - F5.6|
|Maximum Focal Length||20 mm|
|Maximum Format Size||APS-C / DX|
|Minimum Focal Length||10 mm|
|Number of Diaphragm Blades||6|
|Number of Elements||14|
|Number of Groups||10|
|Photo Filter Thread Size||77 mm|
|Real Angle Of View||102.4 Degrees|
|Shipping Weight||1.72 pounds|
|Style Name||Sigma SLR Camera|
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|Sold By||Available from these sellers||Adorama Camera||Amazon.com||Abe's Electronics Center||Amazon.com||Amazon.com|
|Compatible Camera Mount||Sigma SA Bayonet||Nikon F (DX)||Nikon F (DX)||Nikon (DX)||Canon EF-S||Nikon F (DX)|
|Focus Type||Ring-type ultrasonic||Ring-type ultrasonic||Ring-type ultrasonic||automatic_only||Stepper motor||Ultrasonic|
|Item Dimensions||3.31 x 3.19 x 3.31 in||3.43 x 3.46 x 3.43 in||2.76 x 2.09 x 2.76 in||4.02 x 4.02 x 4.02 in||2.95 x 2.83 x 2.95 in||3.27 x 3.43 x 3.27 in|
|Item Weight||1.04 lbs||—||7.05 ounces||1.21 lbs||0.53 lb||1.01 lbs|
|Lens Type||Zoom lens||Zoom lens||standard-prime||normal||wide-angle||Zoom lens|
|Maximum Focal Length||20 millimeters||20 millimeters||35 millimeters||16 millimeters||18 millimeters||24 millimeters|
|Minimum Focal Length||10 millimeters||10 millimeters||35 millimeters||11 millimeters||10 millimeters||10 millimeters|
|Photo Filter Thread Size||77 millimeters||82 millimeters||52 millimeters||77 millimeters||67 millimeters||77 millimeters|
10-20mm F4-5.6 EX DC HSM lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography Wide angle of view (102.4° at 10mm and 63.8° at 20mm) offers the photographer greater freedom of expression. These are special DC Series Lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialized design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus! Three SLD glass elements are employed for effective compensation of color aberration, which is a common problem with super-wide angle lenses. One piece of glass mold and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration. This lens is equipped with an inner focusing system, and the models which are equipped with HSM system provide quiet, high speed autofocus shooting and also offer full time manual focusing. It has a minimum focusing distance of 24cm (9.4") at all focal lengths. The non-rotating lens barrel perfectly suits the petal shaped lens hood. A circular polarizing filter can also be used conveniently. Please note: Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.
From the Manufacturer
- The 10 to 20 millimeters f4 to 5.6 EX DC HSM lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with APS-C size image sensors of digital SLR cameras.
- It covers a superwide angle of view 102.4 to 63.8 degrees
- Three pieces of Special Low Dispersion (SLD) elements and three aspherical lens elements produce top quality optical performance.
- Inner focusing system ensures the length of the lens remains unchanged whilst controlling aberrations.
- Equipped with HSM (Hyper Sonic Motor) system
- Minimum focusing distance of 24 centimeters (9.4 inches) at all focal lengths
- Relatively compact, lightweight for an ultra wide-angle zoom lens
Wide angle of view (102.4 degrees at 10 millimeters and 63.8 degrees at 20 millimeters) offers the photographer greater freedom of expression.
Three SLD glass elements are employed for effective compensation of color aberration, which is a common problem with super-wide angle lenses. One piece of glass mold and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration.
This lens is equipped with an inner focusing system, and the models which are equipped with HSM system provide quiet, high speed autofocus shooting and also offer full time manual focusing. It has a minimum focusing distance of 24 centimeters (9.4 inches) at all focal lengths. The non-rotating lens barrel perfectly suits the petal shaped lens hood. A circular polarizing filter can also be used conveniently.
Top customer reviews
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This lens was introduced in 2005, I think. Its successor, the 10-20mm f3.5 in 2009. This one is $270 less. What you get with the newer, more expensive lens is that the f3.5 uses fewer lenses in fewer groups. This produces the only significant performance difference, which is flare. If you include the sun in the image, this lens will flare throughout. The f3.5 will also flare, but less. Of course, if you try to include a strong point source in a 10mm image, just about anything out there will flare some. Shoot without the sun in the scene and let Photoshop be out friend.
As expected with a super-wide, there is some CA, but it's mostly simple purple fringe and very fixable. I always would rather have less complex CA than a tad more sharpness, because complex CA is likely not fixable, and it amounts to the same thing as being less sharp, especially in terms of practical viewable image quality.
I've been doing serious photography since 1967, and it's a small miracle that such a lens can be made today.. It's good enough that it is my only non-Pentax lens.
+ Price/value - the least expensive autofocusing ultra-wide angle (UWA) lens for crop sensor. If you have a good copy it's competitive with the Nikon 10-24 or Canon 10-22.
+ Sharp if you have a good copy - the center is sharp wide open and the corners catch up around f/8 to f/11
+ Good colors/contrast - I found pictures from the 10-20mm to have better contrast and more saturated colors straight out of camera than the Tamron 17-50mm, a lens that pairs well with this lens at around the same price.
+ Solid build quality - no wobbly parts, tightly constructed, and internal focusing (no extending/retracting parts when focusing). The zoom and focus rings both have a solid feel to them.
+ Fast and almost silent autofocus
+ Comes with a 5-year warranty, padded case and hood (Canon only provides 1 year and no accessories for their non-L lenses)
+ Takes 77mm filters - no vignetting even with non-slim frame filters
- I've mentioned "if you have a good copy" several times. I've tested 5 copies of this total and 3 of them showed some degree of de-centered elements, two obvious. If a glass lens element or group of elements is not aligned or slightly tilted inside the lens, the effect can show up in pictures. The effect is that one side (left, right, top or bottom) will be blurry and out of focus while the other side will be sharp and in focus. To be fair, this isn't a problem limited to this lens - there are copies of the $2000 Nikon 14-24mm or the $1700 Canon 16-35mm that have this problem. The problem does seem more pronounced in UWA lenses, probably due to the large angle of view. How do I test for decentering? Shoot a flat subject (a brick wall, a row of trees or even a grass lawn) but make sure the lens is facing completely perpendicular to the subject. Shooting at a non-90 degree angle will naturally cause one side to be more out-of-focus, especially at wide apertures. If the lens is decentered, it will be most apparent at its widest length and aperture (in this case, 10mm f/4) because the most glass is exposed to the sensor. View the image at 100% on the computer at the sides of the image. Usually most lenses have one side slightly sharper than the other, but if one side is obviously blurrier than the other then it can be a problem in your real-world shots. It's a shame that quality control and manufacturing tolerances have not caught up to eliminate this problem and I've heard that it can be quite time-consuming to fix a decentered lens.
In short, I recommend this lens for its pros but advise you thoroughly test it out when you get it.