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[OM] Re: OM lenses

Subject: [OM] Re: OM lenses
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Thu, 08 Nov 2007 20:26:24 -0500
"Push and twist" is called a bayonet mount.  All modern SLR lenses have 
had bayonet mounts since Pentax finally abandoned the Pentax M42 screw 
thread mount in 1975.  The Olympus FTL camera which was just prior to 
the OM system used screw mount lenses but Olympus SLR's have been 
bayonet mount since the OM-1 was announced in 1973.

If the lens is described as OM mount then it is for OM series cameras 
and is definitely a bayonet mount.  If it is also a Zuiko then it is a 
genuine Olympus brand lens since Zuiko is an Olympus trademark for their 
lenses.

Chuck Norcutt


Matthew Granger wrote:
> Thanks Rand E.
> 
> I heard that there were some odd OM lens that were actually screw in. How
> can I find out if the one I have described below is the normal OM push and
> twist mount, or something else?
> 
> 
> On 09/11/2007, Rand E <rtomcala@xxxxxxxxxxx> wrote:
>>
>> Welcome Matthew,
>>   The usage of OM lens on the E-thingies is really welcome.  The fast
>> tele's are great.  Like that 200mm f4 OM lens will give you a 400mm f4
>> tele on your E-500.   But, the OM wides turn into "normal" focal
>> lengths.  i.e., the om 24mm lens is now about the same as a 48mm lens
>> would be on the OM body.  In other words, "You win some, and you lose
>> some".
>> Rand E.
>>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> Matthew Granger wrote:
>>> Hi
>>>
>>> This is my first post. I have an OM body with a variety of lenses, and
>> an
>>> E500 with an adapter ring so I can use the OM lenses.
>>>
>>> I am still building up my kit, and am looking at buying an om system
>> 200mm
>>> f:4 lens online. As the picture they have shown is a bit odd, I cannot
>> see
>>> the mount. Can anyone advise whether it possible this is screw/bayonet
>>> (basically anything other than the 'normal' OM mount?) I would have to
>> get
>>> it to find it won't fit.
>>>
>>> Also, any suggestions on a good wide angle lens that is affordable to
>> use on
>>> my E500 - I was thinking a 24mm.
>> ==============================================
>> List usage info:     http://www.zuikoholic.com
>> List nannies:        olympusadmin@xxxxxxxxxx
>> ==============================================
>>
> 
> 
> 

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