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Lens focus The place to talk about your camera's glassware.

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  #1  
Old 23rd April 2008
Jim
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OM Lens Question

I have never looked at OM lenses in terms of the adapter for 4/3rds, but I came across this lens, ZUIKO AUTO-T 100mm f/2.8 and wondered if someone could explain what the Auto-T stood for

Cheers.
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Old 23rd April 2008
JohnGG JohnGG is offline
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Re: OM Lens Question

IIRC, Auto-T meant that it was an automatic diaphragm telephoto lens. There were also Auto-W wide-angle and Auto-S standard lenses. Another naming convention I seem to recall on the early silver-nose OM lenses was the use of a letter prefix to denote the number of elements in the construction, eg E.Zuiko would be a five-element lens, G.Zuiko a seven.

This site (http://www.datasync.com/~farrar/zuiko.html) is a useful source of information.

Cheers,

JohnGG
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Old 23rd April 2008
Jim
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Re: OM Lens Question

Thanks John, I'll bookmark that page as I am sure it will come in handy
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Old 23rd April 2008
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HughofBardfield HughofBardfield is offline
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Re: OM Lens Question

If you haven't seen it, you might be interested in these tests of OM lenses on the E1: http://www.biofos.com/cornucop/omz_e1.html

The 100mm f2.8 is one John Foster recommends.
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  #5  
Old 23rd April 2008
Jim
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Re: OM Lens Question

Huge, thanks for the link, another page bookmarked
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Old 23rd April 2008
DTD DTD is offline
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Re: OM Lens Question

I had the 100mm as part of my OM system, it was a really nice lens.
IIRC didn't the silver band around the front of some OM lenses denote single as opposed to multi coating?
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Old 23rd April 2008
OlyFlyer
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Re: OM Lens Question

Quote:
Originally Posted by HughofBardfield View Post
The 100mm f2.8 is one John Foster recommends.
I use one very often and find it really good for portraits, even if it is a bit too long.
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Old 24th April 2008
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Steve Lane Steve Lane is offline
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Re: OM Lens Question

A superb lens, and very tiny for this focal length.
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visit my website www.photoark.co.uk
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Old 24th April 2008
gphemy gphemy is offline
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Re: OM Lens Question

Quote:
Originally Posted by DTD View Post
IIRC didn't the silver band around the front of some OM lenses denote single as opposed to multi coating?
The silver finish was simply a cosmetic feature of the first generation OM lenses, and is therefore 'associated' with single-coating, but does not 'denote' single-coating. An engraved "MC" on the front ring of an OM lens usually does denote multi-coating, but the absence of "MC" does not denote the opposite! And it's trivially easy to switch the front rings anyway. The simplest way to check for multi-coating is to look at the reflections from the lens glass.
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