m42 Fan Group

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About m42 Fan Group

The M42 lens mount is a screw thread mounting standard for attaching lenses to 35 mm cameras, primarily single-lens reflex models. It is more accurately known as the M42 × 1 mm standard, which means that it is a metric screw thread of 42 mm diameter and 1 mm thread pitch. It was first used in Zeiss' Contax S of 1949; this East German branch of Zeiss also sold cameras under the Pentacon name; after merger with other East German photographic manufacturers, the name Praktica was used. M42 thread mount cameras first became well-known in Japan under the Praktica brand, and thus the M42 mount is known as the Praktica thread mount there. Since there were no proprietary elements to the M42 mount, many other manufacturers used it; this has led to it being called the Universal thread mount or Universal screw mount by many. The M42 mount was popularized in the United States by Pentax; thus, it is also known as the Pentax thread mount, despite the fact that Pentax did not originate it.


Oggi gli obiettivi con attacco m42 sono utilizzabili su reflex digitali tramite apposito adattatore.
I corpi di macchine Full Frame non accettano tutti gli obiettivi in quanto avendo uno specchio maggiorato rispetto alle APSC può accadere che al momento dello scatto questo possa urtare contro la parte posteriore della lente provocando danni alla macchina.
Generalmente tutte le macchine CANONO, NIKON, PENTAX, OLYMPUS posso ospitare le lenti m42 adattate; su nikon però si perde la messa a fuoco all'infinito.

Postate le vostre foto e buon divertimento!