Archived posting to the Leica Users Group, 1997/12/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]
Stanley Reinike 961121 <korling@asiana.co.kr> writes:
> Eric Welch wrote:
>> Nope. There has been no change in the 50mm f/1.0 Noctilux formula since
> it's beginning.
> Eric, Here's a quote from the Photography in Malaysia page: It seems to
> contradict your statement.
> http://mir.com.my/rb/photography/hardwares/speciallenses/leica_notc.htm
> Used to be the sole fastest commercially available 35mm lens in the
> world - but remains as the fastest modern lens in the rangefinder
> camera system. First model appearing in 1976. Current version
> Noctilux-M. New glasses enabled the Notilux to be re-computed to give
> outstanding maximum aperture of f1 and also dispense with aspherical
> surfaces - thus making the manufacturing process simpler. The new
> version is a complete new design with seven elements instead of 6
> elements and with "air lenses" for additional correction. This lens is
<snip>
Stanley,
it is no contradiction:
The first Noctilux was f1.2. This lens was recomputed as stated above and
became the outstanding f1.0. This lens has never been recomputed.
christoph
P.S. Though the formula wasn't changed the filter thread has been changed from
58mm to 60mm. Later the hood has been integrated.