本帖最後由 grandetech 於 2014-2-7 23:28 編輯
Erwin Puts writes about the aspherical FD 55mm 1.2 lens: “Some commentators called the Canon FD 1.2 aspherical the best standard lens in the world. It is hard to disagree.”
“In 1971, when the Noctilux was still being produced and sold, Canon introduces their own version of an 1.2 design with aspherics. Presumably they could not stand the humiliation of being defeated by the Leitz construction, at least wide open.
With this lens Canon pulled all stops. See my report on the Canon design here. The Canon aspherical is wide open clearly better than the Noct 1.2. Especially in the outer zones the Canon is much improved and in the center of the image the Canon has an impressive performance, that surpasses the one you get from the Noct. Stopped down the Canon wins easily. Wide open at 1.2 you will note a difference in approach of correcting aberrations. The Canon has a very good image quality ove the whole picture frame, where the Noct concentrates on the center part of the image. Whatever the approach, the Canon design gives the better imagery, aperture for aperture.”
Despite its large aperture, it is highly reputed for its high contrast and stabilized image definition at full aperture opening. Because of its fast f/1.2 speed, it provides high image quality in low light level photography.
Additionally, this lens incorporates the Floating System which enables aberration-free shooting at close subject distance. Thus, a sharp image is obtained through the entire focusing range. Therefore, the focused image through the viewfinder can be reproduced just as it is.
The crazy news on that lens is that the lens is actually lightly…ehmmm….radioactive! But there is nothing to worry about:Olypedia writes: “If this lens worries you, DO NOT EXPOSE YOURSELF TO THE SUN! It’s much more dangerous to you and your film…”
further f/1.2 sharpness showing off, floating element takes the advantage in this one: 
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發表於 2014-1-29 01:08:41
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