More budget lenses seem to be coming with terms like APO, including the new lenses from Viltrox, but do these lenses truly ...

Today we enjoy a greater variety of telescope designs and levels of sophistication than ever before, but several niches seem to be consistently more popular than others. Among them are 4-inch ...

Diffractive and refractive lenses are widely used in X-ray analysis and high-resolution X-ray microscopy with many scientific applications in materials science, energy sciences and biology.

Being a budget-minded individual, I usually work with lower-end telescopes. For this review, however, I decided it was high time to try out a luxury instrument. My road-test vehicle has a name with a ...

I’m going to get straight to the point: this article is about how the best lenses for black and white photography are apochromatic lenses. And I’m going to explain to you after years of shooting with ...

Barrington, NJ. Edmund Optics announced it is now offering new super apochromatic objectives manufactured by Olympus. These silicone-immersion objectives are suitable for use in a variety of digital ...

When you use DPReview links to buy products, the site may earn a commission. Image: Viltrox Viltrox has announced two new ...