Reviews and Problems with Sigma 18-200mm F3.5-6.3 DC OS HSM
Showing 1-10 of 22
Suffers from a lack of sharpness
13 March 2014
Summary: As a landscape photographer, sharpness is irreplaceable. I am always on the look-out for a light lens that suits my backpacking and hiking needs - and this lens is not it! Realistically, I knew this lens would not perform like a prime lens or $1500 zoom lens. However, it is incredibly soft and that is a deal breaker for me. In comparing with my Nikon 16-85 and 70-300 on my Nikon D7100, images were notably softer across all focal lengths.
Summary: I bought this lens for my Nikon SLR and was very disappointed. The lens did not fit the camera correctly (I would get f-- for the f-stop) so no picture could be taken. I called Sigma and they said the only way to fix it was to ship the lens back to Sigma. They did not find anything wrong with the lens so they asked me to ship my camera to them to calibrate the camera to the lens. I was not happy because 1. shouldn't it already be calibrated if it is for a Nikon camera 2.
Summary: I'm not sure if the lens that I got was just defective or representative of the product as a whole. I will say that this lens is in the process of being returned and replaced with another brand. It was nice to think that one lens would answer all of my needs but there is a reason to go with a DSLR and that is the ability to change lenses for varying circumstances.
Summary: I purchased this as a lower cost alternative to the Sigma 18-250 for use on my Canon Xsi. Construction quality and optics seemed to be fine. The optical stabilization was something else completely. At anywhere past 1/2 zoom to full zoom, the OS caused the image in the viewfinder to jump very noticeably. I was using the lens for a lot of sports photography, so the zoom was very important. The jitters of the image at mid to high zoom were so bad I could not use the lens.
Summary: I purchased this lens to attach to a Nikon D-60 SLR camera. It was to be used in my many excursions with a travel/exchange group. This year we went to Turkey. At first I was satisfied with the lens but it commenced to give me camera errors that read sort of," Lens not fully attached to camera". To correct I locked the lens and tightened. This happened approximately 15-20 times in an eighteen day period. Also, the lens developed numerous spots.
Summary: Loved this lens when it worked... however now, only one year later, this lens doesn't work! Short circuits new Nikon D90 camera and won't AF on D50. I can't afford to be buying a new $500 lens on a yearly basis - I'm extremely disappointed in Sigma's longevity.
Summary: After my Sigma broke, I got a Tamron version with similar specs but at cheaper price and for better value. In all honesty, the 18-200mm has an issue of introducing noise, and the locking mechanism is very rigid so you are likely to get it jammed. The barrel often requires a small nudge to get it to move. If I had to rate this product in comparison to the better value Tamron version, I would rate 4/10.
Summary: I thought that the other lenses that weren't Canon were of the same quality. Talked to many fotographers and all agreed. But NOT!! I get a much sharper picture with my original canon that with this Sigma lens. So... I am still using my old one and only when I have to zoom in far away I use the sigma. Bummer!