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[OM] Re: OM40 / OMG OM2 OM2n and T10 Ring Flash

Subject: [OM] Re: OM40 / OMG OM2 OM2n and T10 Ring Flash
From: "Piers Hemy" <piers@xxxxxxxx>
Date: Fri, 3 Sep 2004 23:24:17 +0100
Why 1/30?  Because the actual shutter speed selected by the camera in auto
mode is not a fixed value - but the viewfinder *is*, being the nearest to
the actual.  The actual speed selected for a 1/60s indication could be
1/80s, which would not give a full frame flash exposure (and thus, by
design, does not fire the flash) but it could be 1/50s, which would be OK
(and the flash would fire).  With an indication of 1/30s, you can be sure
the actual speed will be below 1/60s, hence my phraseology - 1/60s might
work fine, but it might not!

As to your second point, we are getting complicated here when you introduce
all the other bodies.  Can we take it one step at a time?  The OM-40/-PC
controls the T-series in Auto and Program modes, not the other way round.
In Auto mode, it's as I phrased it above.  In Program mode, it depends on
film speed, ambient illumination, and the minimum aperture of the lens (or
whatever lesser minimum you have set)

Beginning to wish you hadn't asked?  It gets very complicated trying to keep
track of capabilities when you switch between different bodies and different
flashguns, believe me!

Piers

-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Michael Kopp
Sent: 03 September 2004 22:20
To: olympus@xxxxxxxxxx
Subject: [OM] Re: OM40 / OMG OM2 OM2n and T10 Ring Flash

>Either Program or Auto modes with a viewfinder shutter speed indication 
>of 1/30s or longer
>
>Piers

Why 1/30? Shouldn't 1/60 do as that's sync-able?

And ... I have a feeling the T-series flashes were supposed to automatically
set the shutter speed at 1/60 when in OM-2-3-4-20-30-40 TTL control mode?

Again, Merci,

M<

>
>-----Original Message-----
>From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On 
>Behalf Of Michael Kopp
>Sent: 03 September 2004 10:15
>To: olympus@xxxxxxxxxx
>Subject: [OM] Re: OM40 / OMG OM2 OM2n and T10 Ring Flash
>
>At 23:09 +0100 2/9/04, Piers Hemy wrote:
>>Agreed jeff - keep in mind that they are called the T10 and T32 to 
>>indicate their guide numbers, and the former is designed/intended for 
>>very close range macro-photo flash (though I have used it for normal 
>>flash too).  Also keep in mind that the T10 is *not* a modified T32 in 
>>that it does not have the on-board autoflash capability of the T32.
>>The only autoflash capability for the T10 is provided by the camera 
>>body - the OM-40/OM-PC can do this if set appropriately.
>
>Which is ... ???
>
>Cheers,
>
>Michael Kopp
>Wellington, New Zealand
>
>
>>-----Original Message-----
>>From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On 
>>Behalf Of Jeff Keller
>>Sent: 02 September 2004 22:46
>>To: olympus@xxxxxxxxxx
>>Subject: [OM] Re: OM40 / OMG OM2 OM2n and T10 Ring Flash
>>
>>
>>"no matter what the f/stop or distance"
>>
>>I don't know how you're testing it but light from the T10 scatters and 
>>even a full dump may not be enough to light the scene if you're 
>>shooting beyond 10 feet or so.  ... It's been quite awhile since I 
>>used one but it seemed to me that even when using it to light up a 
>>pine cone
>>8 feet away the recycling time was pretty fast if the batteries were 
>>good. I'm not sure how you can tell it's a full dump other than 
>>recycling time ... after all the light is over in a flash ... and it 
>>won't completely blind you the way a full dump from a T32 or T45 will.
>>-jeff
>>
>>----- Original Message -----
>>From: "Michael Kopp" <mkopp@xxxxxxxxxx>
>>To: <olympus@xxxxxxxxxx>
>>Sent: Thursday, September 02, 2004 9:45 AM
>>Subject: [OM] OM40 / OMG OM2 OM2n and T10 Ring Flash
>>
>>
>>>   Hello again, Olympians,
>>>
>>>   (Or is that Olympusians?)
>>>
>>>   As usual when I hit a brick wall in use or Web research about my  
>>> Olympus collection, I come to the experts.
>>>
>>>   I have an OM40 (which is the OMG in the U.S.) and a T10 Ring Flash.
>>>
>>>   The OM40 works fine with a T32, making it produce flashes of 
>>> varying  brightness (power/time) depending on f/stop and distance as 
>>> it's  supposed to do.
>>>
>>>   It does not seem to do this with the T10, which produces what  
>>> appears  to be a full-power flash no matter what the f/stop or distance.
>>>
>>>   Yet the T10 is really just a modified T32 power unit, as I  
>>> understand  it, and has the same 3-contact shoe and switch for  
>>> contacting the  three contacts in a Shoe 4 or my OM40.
>>>
>>>   I cannot find anything in any of the specs or instructions for  
>>> either  camera or flash on any of the usual suspect Web sites, or by  
>>> Googling,  which indicates which cameras the T10 is compatible with.
>>>   However, since the OM40 is a subsequent development (and 
>>> refinement)  of the OM2 OTF technology, one would think that the T10 
>>> should work  with it.
>>>
>>>   If so, that would seem to indicate that the T10 has a problem.
>>>
>>>   Any information, experience, advice or opinion would be gratefully
>>received.
>>>
>>>   TIA and Cheers from the Antipodes,
>>>
>>>   --
>>>   Michael Kopp
>>>   Wellington, New Zealand
>>>
>>>   ==============================================
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>>>   List nannies:        olympusadmin@xxxxxxxxxx
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>>
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>
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>List nannies:        olympusadmin@xxxxxxxxxx
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List usage info:     http://www.zuikoholic.com
List nannies:        olympusadmin@xxxxxxxxxx
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