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Sigma 20mm F1.4 ART DG HSM Lens for Canon
|Price:||$899.00 & FREE Shipping|
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- Optical designs is highly resistant to strong incidental light sources such as backlight
- Minimized Chromatic aberration, distortion, and ghosting
- This lens delivers excellent brightness and bokeh and is ideal high speed lens for snapshots.
- The Sigma 20mm F1.4 DG HSM can be considered as the culmination of the Art line in relation with F1.4 series
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From the manufacturer
20 Millimeter F1.4 DG HSM | A
Wide, Bright and Sharp
The Sigma 20 millimeter 1.4 DG HSM Art is a state of the art wide-angle prime lens designed for Full Frame cameras but will work with APS-C sensors as well. Using over 50 years of lens making experience, particularly the knowledge gained from the 35 millimeter 1.4 Art and the 24 millimeter 1.4 Art, the 20 millimeter 1.4 Art is the widest large aperture Art lens to date. The latest optical design allows for the utmost in image quality with careful attention paid to edge to edge performance. Through decades of experience in lens design and Sigma Global Vision lens manufacturing, the 20 millimeter incorporates both “F” Low Dispersion (FLD) glass, and five Special Low Dispersion (SLD) glass in a design of 15 elements in 11 groups. The combination of advanced optics and optimized lens power distribution minimizes spherical aberration, axial chromatic aberration and field curvature, producing outstanding image quality. With class leading performance, this lens is ideal for landscape photography, videography, astrophotography, lowlight or indoor photography and event photography. As with all Global Vision lines, the 20 millimeter will be tested using the proprietary 'A1' measuring system ensuring the highest standard of operation. The Sigma 20 millimeter Art is compatible with the USB dock to update and customize and is also compatible with the Mount Conversion Service. A staple procedure for the Global Vision lines, every lens will be tested using the proprietary 'A1' measuring system.
About the 20 millimeter 20mm F1.4 DG HSM | A
- Outstanding Edge to Edge Performance
- Individually inspected Hand crafted in Japan
- Accessories include: Plastic Cover Lens Cap (LC907-01), carrying case
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|Sold By||Cameta Camera||Adorama Camera||Amazon.com||SDC Photo||Photo Savings||Photo4Less|
|Compatible Camera Mount||Canon EF, Canon EF||Canon EF||Canon EF||Canon EF||—||Canon EF-S|
|Focus Type||auto-focus||Auto/Manual||Ultrasonic||Ring-type ultrasonic||auto-focus||Ring-type ultrasonic|
|Item Dimensions||3.6 x 3.6 x 5.1 in||3.3 x 3.1 x 3.3 in||3.07 x 2.8 x 3.07 in||3.03 x 3.7 x 3.03 in||3.3 x 4.7 x 3.3 in||3.07 x 4.76 x 3.07 in|
|Item Weight||2.1 lbs||1 lb||0.89 lb||1 lb||1.5 lbs||1.79 lbs|
|Lens Type||standard-prime||wide-angle-prime||wide-angle||Prime lens||zoom||Zoom lens|
|Maximum Focal Length||20||24 millimeters||20||35 millimeters||24||35 millimeters|
|Minimum Focal Length||20||24 millimeters||20 millimeters||35 millimeters||11||18 millimeters|
|Photo Filter Thread Size||—||77 millimeters||72 millimeters||67 millimeters||—||72 millimeters|
The new 20mm F1.4 DG HSM Art joins the Sigma art line. This lens is the world's first 20mm Prime lens that has achieved the large aperture F1.4 for full frame DSLRs
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The copy I received did require some microfocus adjustments (-13 according to Reikan FoCal). Since then focus has been dead on.
f/1.4 is great to work with, although as expected the depth of field is razor thin. Pictures of my daughter had a single hair coming down in front of her face. The autofocus caught singular hair and the rest of her face (about 0.5 inches behind the hair) was clearly out of focus. Wedding photography was great. I have the relatively fast f/2.8 Tamron 24-70 zoom and I was frustrated that 2.8 was too slow (with no flash). The 20mm Sigma worked well for group and table portraits, and even for individuals, giving you a lot of blurred background.
Astrophotography. I've only done a few tests, but you likely are going to want to stop this lens down to 2.0/2.2 to get rid of vignetting and to minimize coma. Coma will still be there, but only if you are pixel peeping. I find on a few test prints, I couldn't pick it up.
I haven't been hiking with this lens yet. I will update once I have a chance to get some landscapes at F/8.0.
Did quite a bit of shooting with this lens in Costa Rica, unfortunately the moon was up and strong most of the nights. I've attached a night shot I was able to get at F2.0 of the resort and ocean
There is NO noticeable comma at even wide open, f-1.4. Only if you zoom in at 100%, you can see slight streaking at edges, but when you present your photos, there is no way for viewer to see it.
The combination of wide-angle with wide-open aperture is absolutely unique and cuts down the amount of work astro-photographers have to do. Normally you would do panos for Milky Way and then separate panos for foreground, and then task of aligning stacking everything due to noise, and then aligning and then merging with fg. That takes hours to shoot and even longer to process.
With this lens, you don't have to worry about noise in sky as ISO can be reasonably low, and it picks up enough area that for most scenes need for pano is eliminated. Since you can pick up light fast, for most scenes, even 30 seconds is enough for separate foreground exposure.
However, it is still better to do a long exposure for foreground as higher ISO shot would not have same quality as long exposure at low ISO. Except with this lens, you don't have to do 20 minute exposures. The f-1.4 cuts it down significantly.
WHAT NEEDS IMPROVEMENT?
Well, the corners are SOFT. Meaning if you put something with texture in your corners, then it would look fuzzy and out of focus. One simple way to deal with it is to crop it out. However, then it distorts your comp.
Best way is to not put stuff with texture in corners (sand, water and sky are good candidates for subject in corners, tress and rocks are not), and if you do need it for your comp, then take separate exposure for the corners where the subject is sharp and then later on blend that back in your image.
Money well spent! I only have Canon lenses in my arsenal, but proud to day this is a great addition. Bravo Sigma!
I've had the lens about a month and took it with me on a trip to Banff and Jasper in Canada. I dropped my Sigma 24-105 f/4 Art lens and smashed it, so I was left shooting with the 20mm and I have to say I am very pleased with the outcome. Images are super crisp, even in the corners. I was able to shoot well into the evening even handheld because of the wide aperture.
I haven't had a chance to use this lens for astrophotography yet, but will be heading to Moab, UT at the end of the month and will update the review then.