Sample Image Gallery: Sigma 18-35mm F/1.8 DC HSM Prototype

We spent the weekend with a close-to-final prototype of the new Sigma 18-35mm f/1.8 lens

Sigma 18-35 f/1.8
Sigma 18-35 f/1.8
Dan Bracaglia

We were quite excited when we first caught wind of Sigma's made new 18-35mm f/1.8 lens for APS-C sensor DSLR's. It's new territory in a land of zooms that typically max out at F/2.8.And iIt really could be a game changer in the fight between full-frame and crop-sensor cameras.

We spent the weekend with a fairly-close-to-final prototype of the 18-35mm f/1.8 and our initial impressions of it were quite positive. The lens itself is a member of Sigma's Art Series, and, like all their other Art Series lenes, it offers really beautiful build-quality and attention to detail, in terms of materials and finish. The zoom and focus ring both also provide a nice amount of damping, for smooth steady turning. The lens itself weighs about the same as a Canon 16-35mm f/2.8, and is about the same size as well (just a bit taller). However, for full impressions of how the lens functioned, you'll have to wait until we get a final version that we can run through our test lab. For now, check out the 20 sample images in the gallery at the right.

A few notes about those images: They were all shot with a Canon EOS Rebel T3i as RAW files. They were then converted to full-res JPG's (in the sRGB color-space) using Adobe Lightroom 4. Each image offers a link to a full-res view. I should also note that some slight exposure adjustments were made here and there for your viewing pleasure, although none more than a quarter of a stop.

Note: You may notice that the few images shoot wide open at f/1.8, zoomed out to 18mm appear to be extremely soft. As far as we can tell, this is due to the prototype nature of the lens. Again, as soon as we have a final version for testing, we will update you.

Sigma 18-35 f/1.8 no.01
Sigma 18-35 f/1.8 no.01
Tech Specs: ISO 400, 1/1250 sec, f/8.
Focal Length: 35mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.02
Sigma 18-35 f/1.8 no.02
Tech Specs: ISO 400, 1/800 sec, f/8.
Focal Length: 23mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.03
Sigma 18-35 f/1.8 no.03
We ran into some softness issues shooting at f/1.8, especially when zoomed all the way out to 18mm and shooting scenes that were more than a few feet away. However, this can likely be attributed to this being a prototype lens. Tech Specs: ISO 100, 1/1600 sec, f/1.8.
Focal Length: 35mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.04
Sigma 18-35 f/1.8 no.04
Unlike the last image, when shooting close-up subjects, we had no issues achieving sharp focus at f/1.8 when zoomed in to 35mm, or zoomed out to 18mm (see next slide). Tech Specs: ISO 100, 1/1600 sec, f/1.8.
Focal Length: 35mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.05
Sigma 18-35 f/1.8 no.05
Tech Specs: ISO 100, 1/400 sec, f/1.8. Exposure compensation of -0.7.
Focal Length: 18mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.06
Sigma 18-35 f/1.8 no.06
Tech Specs: ISO 100, 1/800 sec, f/2.8.
Focal Length: 25mm
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Dan Bracaglia
Sigma 18-35 f/1.8 no.07
Sigma 18-35 f/1.8 no.07
Tech Specs: ISO 800, 1/320 sec, f/4.
Focal Length: 19mm
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Dan Bracaglia
Sigma 18-35 f/1.8 no.08
Sigma 18-35 f/1.8 no.08
Tech Specs: ISO 400, 1/80 sec, f/9. br>Focal Length: 18mm
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Dan Bracaglia
Sigma 18-35 f/1.8 no.09
Sigma 18-35 f/1.8 no.09
Tech Specs: ISO 400, 1/125 sec, f/9. Exposure compensation of -0.7.
Focal Length: 18mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.10
Sigma 18-35 f/1.8 no.10
Tech Specs: ISO 400, 1/4000 sec, f/9.
Focal Length: 52mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.11
Sigma 18-35 f/1.8 no.11
Tech Specs: ISO 1600, 1/125 sec, f/5.
Focal Length: 32mm
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Dan Bracaglia
Sigma 18-35 f/1.8 no.12
Sigma 18-35 f/1.8 no.12
Tech Specs: ISO 100, 1/500 sec, f/9.
Focal Length: 18mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.13
Sigma 18-35 f/1.8 no.13
The next few images are meant to demonstrate the full zoom-range and aperture range of the lens. Tech Specs: ISO 1600, 1/400 sec, f/16.
Focal Length: 52mm
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Dan Bracaglia
Sigma 18-35 f/1.8 no.14
Sigma 18-35 f/1.8 no.14
Again, once we opened up the aperture to f/1.8, we ran into some very noticeable problems obtaining sharp focus on anything more than a few feet away. For now will attribute this to the fact that we were using a prototype. Tech Specs: ISO 100, 1/4000 sec, f/1.8.
Focal Length: 18mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.15
Sigma 18-35 f/1.8 no.15
Tech Specs: ISO 400, 1/160 sec, f/16.
Focal Length: 35mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.16
Sigma 18-35 f/1.8 no.16
Tech Specs: ISO 100, 1/4000 sec, f/1.8.
Focal Length: 35mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.17
Sigma 18-35 f/1.8 no.17
Tech Specs: ISO 800, 1/1250 sec, f/5.6. Focal Length: 35mm
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Dan Bracaglia
Sigma 18-35 f/1.8 no.18
Sigma 18-35 f/1.8 no.18
Tech Specs: ISO 100, 1/1000 sec, f/5.6. Focal Length: 18mm
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Dan Bracaglia
Sigma 18-35 f/1.8 no.19
Sigma 18-35 f/1.8 no.19
Tech Specs: ISO 800, 1/400 sec, f/5.6. Focal Length: 18mm
(CLICK FOR FULL-RES)
Dan Bracaglia
Sigma 18-35 f/1.8 no.20
Sigma 18-35 f/1.8 no.20
Tech Specs: ISO 800, 1/60 sec, f/5. Exposure compensation of -0.7.
Focal Length: 18mm
(CLICK FOR FULL-RES)
Dan Bracaglia