![]() ![]() Yes, it is most certainly sharpest between f/5.6 and f/7.1, with the best image quality at a wide angle produced at f/2.8. I tested the sharpness of this lens in a number of situations, and found it to be pretty consistent and sharp at all focal lengths and apertures. At best they could have looked good, but would that have made a major difference to users? I feel like it was an unnecessary risk. I’m really not sure why Sigma gave the thumbs up to posting images because they 1) were not done with the final release of the lens and 2) if the images appeared soft (which they did), they could only hurt the general opinion of this lens. Many of you might have been swayed by images posted that were taken prior to the final release of the lens. Be aware of this when backlighting with particularly bright light. I dare say the chroma control is better on this lens than on the 35mm f/1.4.įlaring is decently controlled at most apertures, though you will see some issues arise when it is most open (between f/1.8 and 3.5). This is the only time I saw any aberration, and here it is pretty inconsequential. I was ready to say that there was no CA present whatsoever until the last day of testing on location when I noticed a very slight purple fringe appear around a stitched logo on one of my bags. In studio situations, I saw no chromatic aberration at all, even wide open. It was here that I was probably most impressed. Thumbs up here.Ĭhromatic aberration is extremely well controlled in this lens. It's smooth and fluid, and makes the shallow depth of field really beautiful. I really loved the bokeh out of this lens. The viewfinder still flashed red when an image was in focus, I just got no auditory alert. I know many people turn the beep off to begin with, so it’s not going to be a big deal to them. It only affected the lens while in auto-focus mode. SIGMA 18 35 1.8 PENTAX MANUALAs soon as I switched to manual focus, the camera beeped as usual. ![]() I had a weird issue with my lens and Sigma says that they haven’t seen this before: while in auto-focus, my camera did not beep to alert me that an image was in focus. No lens is going to hit every time in exigent circumstances, so I’m pretty satisfied with how the Sigma did here. ![]() The performance is on par with what I have found with most good quality lenses on the market, third party or otherwise. In a couple cases, it was just a little slow in finding a subject, by which I mean it took it about one and a half seconds instead of half a second. SIGMA 18 35 1.8 PENTAX SOFTWAREIn one instance (as you can see below) I had an issue with it front-focusing, but this is easily remedied with the USB Dock and Sigma software (which are very easy to use).Īt night, the lens is a bit less accurate, but it correctly focused (in nearly pure darkness) ten out of thirteen times. It’s fast and, generally speaking, very accurate as all the new Sigma lenses have been. Using this lens is very easy, and the autofocus works, of course, very well in daylight. The entire zoom range is internal, so it doesn’t change sizes on you. It’s a few inches longer than a comparable Canon 18-55mm or Nikon 18-35mm. While on that note, the lens is rather large, especially for what many of you will be used to with this focal range. I hand-held the lens a lot (as opposed to using a tripod) and I have to say I never felt like it weighed too much, which was a fear given the size of the lens. It balances deftly between the two extremes of being too heavy and not feeling like it has a quality build. At 1.78 pounds, the lens has heft, but it’s not what I would call heavy. It’s a gorgeous blend of metal and rubber with only a few plastic parts. It’s built just like the 35mm f/1.4, and that’s a good thing. As I mentioned in my first look back in May, this lens is beautiful. Once we get past the physical limitations of the lens, we can really start to appreciate its build. Are you a bad photographer if you don’t have one? That’s absurd. SIGMA 18 35 1.8 PENTAX FULLI personally think that though the full frame sensors are nice, their impact and necessity are generally overstated. It is designed specifically for cameras with APS-C sensors, which means you can’t fit it on your 5D MKIII or D800. Please click on images below to get the full resolution with proper color and contrast.įor starters, as many of your know, this is not a full frame lens. As a note, most images below have been downsampled by our content management system to allow for easy and fast loading, but this does affect image quality. ![]()
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