JoanieH "Running in circles, screaming and sh..., Amazon
4 January 2014
Summary: I am not easy to please when it comes to quality. I spent most of my career as a test/quality engineer in aerospace and capital equipment manufacturing and I can spot lemons from a mile away. This lens, however, does what it is supposed to do, and while the motor for the autofocus is a bit loud, at least mine is not so loud that I would hesitate to use it at a wedding or other event.
Summary: I found this to be a really wonderful lens for the price. Pros: - Great clarity - Works flawlessly with my Nikon D5100 - Great price Cons: - A little slower motor than Nikon's lenses - A little noisier than Nikon's lenses.
Summary: I have used Nikor lenses and I have used other off brand lenses. When purchasing an off brand lens like a Sigma I am worried about: Will the lens interact and function properly with my camera? For the Sigma lens the answer is absolutely yes. Will the glass in the Sigma lens have the clarity I want for crisp photos? Again, the answer is a resounding yes.
Summary: I just bought a Nikon D5100 and the kit leans just didn't have enough reach for me. I really didn't want to pay $300-$500 for a longer lens and I'm glad I didn't have to. This has to be the best bang for the buck lens out there. It takes really sharp images, especially macro. I've read some complaints that you need a tripod to shoot macro otherwise you can't get it focus or get a blurry photo. However, my experience has been different.
Summary: Nikon refused to do an out-of-warranty repair my nikon afs-nikkor 70-300mm lens. They said it was irrepairable ( I think they meant irreparable). They charge a flat rate of $200 for repairs but because it involved a little work they elected to just sent it back to me. What a bunch of sissies. Anyway, since I did not have another $500. to shell out for the same lens I turned to amazon to find a replacement.. I cannot believe I found a Sigma lens for just over $100.
Summary: I used this lens for couple of months now and I have to say - it's great. It is not all that loud either! Yes, you gonna hear it, but it doesn't make you "go nuts" ;) Works very good with my Nikon D3000. You need to have a steady hand or preferably - tripod for lower light and longer exposures, and longer shutter speed, but from hand on fast shutter speed works pretty good to! Easy switch between normal/macro.
Excerpt: Image quality was my only conceren when buying this lens. I compared 4 lenses head to head on my k5. I took the same picture with the same f-stop (f 11). pentax 55-200, pentax 55-300, sigma 18-250 and sigma 70-300 non apo. I whent back and took same pic with this 70-300 apo lens,this lens was the best.