Definition: An achromatic lens can be defined as a lens which is made by a combination of two different types of lenses carrying different focal powers in a manner such that the images formed by the ...

An achromatic cylindrical lens is composed of a positive low refractive index cylindrical lens and negative high refractive index cylindrical lens cemented together, which can significantly reduce ...

Owning one of the best lens heaters is an absolute must if you're shooting in cold conditions to prevent your glass from fogging up. Owning one of the best lens heaters is a must if you're a ...

What we got was a lineup of 15 spotters in a wide range of magnification, objective lenses, sizes, and purposes. Our plan? To ...

At the time, the Cooke triplet was a major advancement in lens design. For one wavelength, the design can correct, using only three elements, spherical aberration, coma, astigmatism, field curvature, ...

The best iPhone lenses are a sure fire way to take your iPhone photography up a level. Sure, the iPhone 15 Pro has a 48MP sensor, which sounds great on paper, right? Well, ask any professional ...

Here are the best Fujifilm GF lenses for the GFX 50S, GFX 50S II, GFX 50R, GFX 100, GFX 100 II & GFX 100s When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

The best Canon lenses for DSLRs are some of the very best in the business. In fact, they're so good that many photographers are still using them on mirrorless cameras instead of the more expensive ...

The best lenses for astrophotography enable you to capture the stars at the highest quality possible. Our roundup includes models for all leading camera brands. You'll want to own one of the best ...

The best binoculars for stargazing need high magnification and large, light-hungry objective lenses — check out our favorites ahead of Amazon Prime Big Deal Days. Ideally, the best binoculars ...