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.