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Sigma 18-35mm F1.8 Art DC HSM Lens for Pentax
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- Designed specifically for APS-C sized sensors and the Pentax K-mount cameras.
- Internal focusing and zooming allows for more usability and functionality
- Minimum Focusing Distance 28 cm/ 11.0 in
- The 18-35mm is ideal for landscapes, portraits, still life, snap shots, casual, and close-ups
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|Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping|
|Sold By||Circuit City||Digital Goja||Circuit City||Amazon.com||Amazon.com||Amazon.com|
|Compatible Camera Mount||Pentax KAF3, Pentax KAF3||—||Pentax KAF3, Pentax KAF3||Olympus/Panasonic Micro 4/3||Pentax KAF||Olympus/Panasonic Micro 4/3|
|Focus Type||auto-focus||—||Ring-type ultrasonic||manual-focus||Ultrasonic||—|
|Item Dimensions||4.2 x 3.1 x 4.8 in||—||3.03 x 3.7 x 3.03 in||3.3 x 4.6 x 3.3 in||2.48 x 1.54 x 2.48 in||3.2 x 3.5 x 3.2 in|
|Item Weight||3 lbs||5.16 lbs||1.47 lbs||1.4 lbs||4.3 ounces||1 lb|
|Lens Type||Zoom lens||Zoom||Prime lens||Micro lens||Normal||Fixed|
|Maximum Focal Length||35 millimeters||35 millimeters||35 millimeters||35||30||85|
|Minimum Focal Length||18 millimeters||18 millimeters||35 millimeters||35||10||85|
|Photo Filter Thread Size||72 millimeters||72 millimeters||67 millimeters||77 millimeters||52 millimeters||72 millimeters|
First wide-angle to standard zoom lens to achieve a large aperture of 1.8
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I own a Canon 24-105, 70-200, a Zeiss 50mm Makro, Sigma 30mm, previously owned a Canon 24-70, Tamron 24-70, and Tokina 11-17.
This lens is amazing, built rock solid. Sharp as a prime, and wide enough that it doesn't look super distorted like my Tokina did when filming indoors.
The zoom and focus ring are buttery smooth, just like my Zeiss prime.
It works fantastic on my 550D as well.
If you shoot video - this lens is honestly a must have. I do like my Zeiss more, as it is an amazing lens, but I use this one 10x as much due to the focal length.
I wish it had IS - but hey, can't have everything.
I'm posting a picture blown up to double so you can see some of the detail rendered. On a moth I could see every crease and wave on its wing.
I knew this lens would be good, but I had no idea it would be this good.
Beware and this isn't the lenses fault but if you're too close to an object this lens will focus on the closest spot it can. It seemed initially like it was misfocusing but it was human error. Most lenses will continue to hunt.
Truly a phenomenal lens!
I'm sure you can find a million reviews on this lens out there better and more in-depth then mine but I thought I'd give my two cents. I've never broken away from buying Canon before and and there are many out there like my old self. If you are one of those people you can't ignore this beauty. It's a GREAT lens and you won't regret picking one up.
So a few weeks after writing this post I shot a friends wedding and I found that when taking pictures at around 20 feet or so away I had very soft focus. I learned that day there were a few sweet spots with this lens but the further I got from my subject the softer the focus got. I initially thought it was my 70D camera was at fault after reeding that they had an inherit flaw when shooting in apertures above 2.8. I learned later that this did turn out to be an issue with my camera (not all 70D's do this by the way but it's worth checking out if you're in the market for a fast lens). I decided to keep my aperture at a minimum of F2.8 but my images were still soft.
I thought I'd always have issues and was contemplating selling the lens then I discovered that Canon recently came out with 80D and I wondered if this might fix my issues... it sadly did not (but don't get me wrong, the 80D did fix the inconsistent autofocus at shots greater then F2.8). I dug back into researching and found a docking device that Sigma sells that allows you to update the firmware of the lens from your computer. I dug a little deeper and found it also allows you to make micro adjustments to the auto focus.
Now before you go out and pick on of these up ($60 by the way) let me tell you a few things. It takes FOREVER to micro-adjust your lens. There are a few video tutorials that tell you how to do it but let me tell you now, set aside about 4 hours or more and do it right. You'll need to buy a lens calibration alignment ruler (there is a paper one sold on Amazon for $6 that works fine) and get set up on a tripod with a computer near by. There are 16 adjustments that need to be made on this lens and each adjustment takes multiple times of undocking and redocking the lens from the computer. Also for the infinity shots, find something very very far away like mountains or a water tower you can focus on with good contrast. This one will be a bit more trial by error but do your best and you should get it pretty close to sharp.
After multiple times of calibrating. taking a day to shoot, and recalibrating this lens now shoots AMAZING!!! It's like I have a new lens and it's finally trustworthy. It is razor sharp especially in the 2-10 foot range and the images that are coming out of this lens are down-right stunning.
I moved my rating from a 5 at first (until I really got to know the lens) down to a 3 as a result of the year of uncertainty it put me through and wedding images I found to be sub-par (glad my buddy wasn't paying me and was fine with the quality otherwise I would of been furious). If you buy this lens buy the USB dock and a lens calibration ruler first thing and get it set right and you'll love this thing until the day you die. I'll add a photo of my dog that I just shot yesterday. This is what I'm getting at F1.8 from about 3 feet away.