Beau Hancock III
New FD 50mm f/1.4
Mir(https://www.mir.com.my/rb/photography/companies/canon/fdresources/fdlenses/50mm.htm#f1.4)
"The 50mm f/1.4 lens was used for optical measurements at various public institutions and is also the standard which determines color balance for the rest of the nearly 60 lenses in the FD series. Perhaps instead of "standard", a more accurate name would be "reference" lens.
In spite of additional improvements over its famous predecessor, the lens has remained compact and lightweight. It weighs a mere 240 grams. Its high resolution and high contrast are achieved by using high refraction index glass and a method for distributing lens power that suppresses spherical aberration and off-axis halos. The lens' renowned color balance is the standard for all other Canon FD interchangeable lenses.
The front and rear lens groups in Canon's FD 50mm f1.4 are symmetrical in optical design. Symmetrical lens construction is a feature of standard lenses which is not found in wide-angle or telephoto lenses. Main advantage of this optical design is permitting a large maximum aperture and still maintain excellent color reproduction. Because of these qualities, standard lenses are usually regarded as a starting point from which to build a lens system including wide-angle and telephoto lenses before the advent and popularity of zoom lenses which has slowly replacing the status of 50mm as 'standard lens'."
Canon Museum (https://global.canon/en/c-museum/product/nfd209.html)
"The optical concept of this lens originated with the FL50mm f/1.4 II and FD50mm f/1.4. It achieves more compactness and higher contrast simultaneously. It has been called “the standard lens of standard lenses”, because of its high image quality. It has an excellent color balance, which is virtually identical to the ISO recommended reference value."
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