The screw in mounts are most likely to the Oly "M" system that came
before the OM system. Other Olympus screw in mounts were on the earlier
versions of the 20mm and 38mm macro lens and they had a microscope type
screw mount. The later versions of the macro lens in 20mm and 38mm came
with an OM bayonet mount but were very limited on focusing ability. I'm
sure about the focal length on the early macro lens and the 38mm later
macro lens, and I'm fairly sure about the 20mm but I could be a little
off on it. The other macro lens (50mm, 80mm, 135mm all had OM bayonet
mounts).
Rand E.
P.S. Please sing out with your home locale as we have many other
members from "Down Under" and I'm sure that they would be interested.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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