At this year's The Photography & Video Show, one thing is clear: third-party lenses are making a big splash. And if I were a big first-party lens brand like Canon, Nikon or Sony, I’d definitely be worried.
Traditionally, first-party lenses have been considered the gold standard in optics, but that perception is changing. Sigma and Tamron have made significant gains in the last several years, revolutionizing their own lenses' build quality and optics, while not compromising on value.
