If you're into photography, you know how expensive Nikon glass can get. Many of us don't have the budget to spend $1700 or more on lenses without selling a kidney.
This is where 3rd-party manufacturers like Sigma, Tamron, and Tokina come into focus.
There are many people who swear these companies make nothing but junk lenses and I can assure you that you get what you pay for.
Sigma, Tamron, and Tokina have come a long way over the years, particularly Sigma. Their professional series (EX) lenses have yielded me great results while saving me a little bit of money.
They offer multiple levels of quality within each focal range to give people an opportunity to do what they love and not give up on photography completely.
Years ago, I used an EX series 70-300mm macro (1:2) that gave me incredible results for the $180 I paid for it on eBay. I had a project in mind and was running low on funds. I found this lens new and ordered it. When it arrived, it didn't have the feel of a professional lens, but it certainly gave me the results I was looking for at the time.
Tokina almost doesn't fit into this category as many professional photographers use Tokina glass in the field. Several companies actually have Tokina lenses re-branded with their name as the quality is on par with Nikon and Canon glass.
Tamron has occupied most photographer's bag at some point, with inexpensive offerings in every focal range, and their old 300mm f/2.8 workhorse is still used by many enthusiast as a great alternative to $3,000 AF versions available today.
Again, the idea is to be able to at least shoot, have a great time, and created beautiful images without going broke.
If you're a nitpicking, pixel-peeping, third-party lens hating individual, this article isn't for you. Move along. Nothing to see here.
Below are some of my favorite Sigma lenses that I personally use.