Combining different glasses together resulted in a lens that corrected almost all aberrations. This type of lens is known as an Anastigmat, and the Protar was the first. There’s much more ...
What lens should I take ... Isles with friends or hiking for two weeks in the rain forest of Brazil? Different types of travel require radically different equipment choices.
There had been speculation about building this type of lens, but Fresnel was apparently unaware of them when he proposed his lens for lighthouse use in 1819. His proposed lens was a bit different ...
It’s impossible for us to recommend the best Sony lens for everyone, simply because there are so many to choose between. From wide-angle primes to super-telephoto zooms, we’ve tested a whole ...
Different contact lenses require different types of solutions. For example, soft contact lenses require a solution that can clean and disinfect them, while rigid gas permeable lenses require a ...