Цитата:от: Алеша Пранк
Не, ну извините, "не знаем - не пробовали!" =)) Но я думаю, что не все уж так прямо плохо =)
In 1976 a new version of the Noctilux was manufactured, now of Canadian design and with the maximum aperture yet another half stop wider. Employing spherical surfaces and using a new Leitz designed glass type, the 900403, the 1:1/50mm Noctilux-M was the first lens to deliver useable image quality at this wide aperture. As with the earlier Noctilux, some myths around the lens have to be discussed and discarded. The comment that this aperture even surpasses the sensitivity of the eye is not very well researched. The maximum aperture of the eye is between 1:2 and 1:3 as the pupil of the eye has a maximum diameter of about 8mm. To find an animal with an eye, that has a really fast aperture, we have to turn to the cat, whose maximum aperture is 1:0.9!! . A second myth, we have already encountered when discussing the properties of the earlier Noctilux 1:1.2/50mm. The new Noctilux improves on stopping down and at apertures around 5.6 surpasses by a small margin the performance of the current Summilux-M and is close to the performance of the current Summicron-M. The inherently higher correction of the Summicron-M gives the pictures taken with this lens a higher clarity and an almost brittle edge contrast. Comparison pictures with the Noctilux show a somewhat softer definition at the level of very fine detail. The suggestion that the Noctilux should only be used at full aperture as this is the aperture where this lens should deliver its best, is not supported by the facts. The Noctilux at full aperture delivers a low to medium overall contrast (due to comatic flare) , and subject outlines are rendered with clear edges on axis. In the field, outlines are more blurred coarse detail becomes soft. Stopping down to 1:1.4 improves contrast substantially and now we see Summilux quality at its 1.4 aperture. At the edges the Noctilux-M is a bit below the performance of the Summilux, due to a higher level of field curvature. At 1:2 the Noctilux-M fingerprint is similar to the Summilux-M, but the Summicron-M has the best overall performance at that aperture. From 1:2.8 the Noctilux-M has excellent on axis performance with a smooth definition of fine detail and a gradual softening of details when going to the corners.
(с) Эрвин Путц.
столько с ним пятаками воевали и - на тебе! 
!
