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Sigma 18-250mm F3.5-6.3 DC MACRO OS HSM, a compact, high zoom ratio lens, covering wide angle, telephoto and macro photography. By revolutionizing the optical and structural design of the Sigma 18-250mm F3.5-6.3 DC OS HSM, this new lens achieves a compact size and a minimum focusing distance of 35cm. New material, Thermally Stable Composite (TSC) maintains its structure and has little contractility especially in varying temperatures, is incorporated into the lens barrel. It is convenient when you wish to keep your equipment to a minimum and yet still be prepared for all opportunities and situations, such as travels.
A wide range of photography is possible in one lens
Covering wide angle 18mm to telephoto 250mm, this versatile lens designed exclusively for digital SLR cameras, is suitable for all-purpose photography including landscape, sport, and macro photography. It is convenient when you wish to keep your equipment to a minimum and yet still be prepared for all opportunities and situations, such as travels.
Excellent for Macro Photography
Close-up capability is improved with the minimum focusing distance of 35cm throughout the entire zoom range, and maximum magnification ratio of 1:2.9. In APS-C size equivalent, macro photography with approximately 1:2 magnification ratio is possible. In addition, with this lens, the size and framing of subjects can be adjusted by rotating a zoom ring, making macro photography easier than using fixed focal macro lens. For further convenience, the maximum magnification ratio at each focusing distance appears on the side of the lens barrel.
Revolutionizing the design foundat ion results in compact size
Optimization of the power arrangement by such as incorporating double-sided aspherical lenses, and reexamination of design, the filter diameter size is reduced. This compact size lens has the approximately 13x high zoom ratio with the filter size of diameter 62mm, and dimensions of diameter 73.5mm x Length 88.6mm. It ensures portability and overall ease of use, making it perfect for travel and leisure photography.
TSC (Thermally Stable Composite)
The new material "TSC (Thermally Stable Composite)", which has little contractility especially in temperature changes, as well as maintaining firmness, is incorporated into the lens barrel. Compared to Polycarbonate which is generally used, TSC has higher elasticity by approximately 25%. Since thermal shrinkage is low, it has high affinity to metal parts which contributes to high quality product manufacturing. It also contributes to the parts such as the zoom ring and scaling to be slimmer.
Brass made bayonet mount
This lens incorporates brass made bayonet mount which has both high accuracy and solidity, same as the mount for camera body. The special treatment to reinforce the strength is applied on the surface to make it a high quality lens that is resistant for long-term use.
Optical Stabilizer (OS)
Sigma's own unique Optical Stabilizer (OS) function is incorporated. It offers effective correction of approximately 4 stops, which makes it possible to compensate camera shake even in macro range photography where a small blur can be easily identified. When photographing a moving subject such as motor sport, it automatically detects camera move, and offers effective correction for camera shake.
The OS effectiveness will gradually decrease as the shooting distance becomes shorter.
Superior optical performance
SLD (Special Low Dispersion) glass element offers excellent correction of color aberration. Three aspherical lenses including double-sided aspherical lens together with the latest design, prevent and correct all types of aberrations including astigmatism, achieving high quality images throughout the entire zoom range
Flare and ghost ing conscious design blades
From an early stage, flare and ghosting are thoroughly measured to establish the design which is resistant to strong incident light such as backlight. Super Multi-Layer Coating reduces flare and ghosting, and provides sharp and high contrast images even in backlit conditions. Supplied petal-type hood can be attached to block out extraneous light which has a harmful influence on rendering of the lens, and prevent internal reflections to occur.
Haven't used the lens that much so far, but initial impressions are good: Pros: Quiet and quick auto focus Good image quality for landscape photography Good zoom range for a multi use everyday lens Cons: Heavy Stiff zoom ring/function
I really, really, really wanted to love this lens. I did a lot of research on my options in this pirce range and the fact it is built is Japan was a major selling point. THE GOOD: Well built with a sharp and clear visual through my DSLR. Operated smoothly and had a feel and look of quality. Quiet. THE BAD: I'm only guessing it was not a good match for my Nikon D7100. Auto-focusing seemed inconsistent and fickle at times on the auto mode. Exposures seemed unpredicatable in any auto mode. The color did not match the quality of my Nikon lenses. One big surprise was that my 200mm Nikon got me just as close to a subject as the 250mm Sigma. I really wanted to love it, but after 1000 test shots - I decided to stick with Nikon products and will simply have to save up more cash to do so.
This keeps my lens switching in the past. So far the images are clean, crisp and sharp. Sigma makes fine lenses.
I bought this lens to replace my kit 18-55 and 55-250 canon lenses. Pros: 1) Great range. No need to swap lenses on a casual photography outing. 2) Well built and looks like it can take a beating 3) Included lens hood is a bonus. Cons: 1) Fine focusing at longer zoom is not great. unless you are absolutely still forget taking any images at near maximum zoom without a tripod. 2) Lens is slow to focus especially in low light.
I really haven't had time to assess this lens properly. So far, its relatively small, feels great and functions as advertised. For $260. with waranty, this was an exceptional purchase. (I should've bought two).
I returned this lens. There was an issue with the auto focus motor. It continually ran and drained my camera battery quickly. I typically get days of shooting out of a battery and with this lens attached I got 3 hours. I could feel the motor focusing even when my finger was not on the shutter button, Very stiff to attach to my Nikon D7100 The zoom photos I took with it were very nice and sharp and the stabilization feature is great . I also like the lock to prevent lens creep. Not the best in low light. For the price its a nice lens mine just had a factory issue. Adorama has an awesome return policy and service!
Overall, better than two kit lenses put together. On my D7000, it is bright enough. Surprisingly sharp throughout focal length. Auto-focus is fast, quiet, and accurate. It searches a little in low-light, but not too bad. Lens creep is a small issue, but the lens lock works well enough for me. Feels sturdy and tight (maybe a little too tight). The hood is nice, but it took me while to figure out that it won't lock in place unless the Sigma logo is on the bottom. Packaging is not fancy or careful like Nikon; my lens cap came wedged on crooked and there was no bag, but that's OK if it's not a sign of lens quality. I'd give it 4.5 stars if I could, but I rounded up because of the price. I'd buy it again in an instant. It will stay on my camera 90% of the time. The versatility is wonderful.
I'm not a pro, and this lens is really great for beginners!
I regret not buying this one earlier for my Nikon 5100. My original Nikon 18-55mm lens did its job, but a lot of times it doesn't give me the reach that I want to get to. I could have bought another longer range lens, but didn't want to carry mutliple lens. This one gives what I need. I have this one for about a month, and so far I am very happy with its performance.
WARNING! If you have a full frame camera do not buy this lens. compatibility check says this lens will work with my Canon 6D. Only if you want a circular photos from 18mm- 100mm and a vignette around each photo at 250mm.