An expensive optional lens is the 10mm Switar.

A set of less expensive lenses marketed with the camera's introduction (Series E) also came in for heavy criticism, and Nikon soon dropped the entire line.

Thus a retailer could stock a small number of expensive lenses that would fit a large number of camera brands using a selection of inexpensive adapters.

The expensive first-order lens were vandalized with the large front Fresnel lenses all gone.

Manufacturers have also introduced ever larger and more expensive lenses as a means of increasing the numerical aperture.

Instead, expensive lenses made of quartz must be used.

Mr. Guttman also stresses that travelers need not have top-of-the-line cameras or expensive lenses to take great photographs.

The 70-300 4.5-5.6 VR is a lighter, slower, and less expensive lens.

Now over 150 years old, Zeiss continues to be associated with expensive and high-quality optical lenses.

Your "eyewear professional" can also push a customer into more expensive lenses, like a high-index lens that is thinner and lighter than a perfectly adequate polycarbonate lens.