Olympus-OM
[Top] [All Lists]

[OM] Re: OM4 to OM4t board circuit

Subject: [OM] Re: OM4 to OM4t board circuit
From: "John Hermanson" <omtech@xxxxxxxxx>
Date: Thu, 9 Dec 2004 17:41:51 -0500
The 30 second test, afaik, indicates a 4T / Ti low drain circuit.

John Hermanson
Camtech Photo Services, Inc.
21 South Lane, Huntington, NY, 11743-4714,
631-424-2121, www.zuiko.com
<:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:>
----- Original Message ----- 
From: "Piers Hemy" <piers@xxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Thursday, December 09, 2004 12:26 PM
Subject: [OM] Re: OM4 to OM4t board circuit


>
> Surely the battery check test will only tell you if a particular OM-4 body
> has the early or later OM-4 electronics?  For Super FP flash, you need
> OM-4Ti electronics, which seems to me to be a different ball-game.  As 
> you,
> Jeff, I defer to others, but with the added caution that we are talking 
> here
> of a conversion to be done for a camera in Europe.  If it were sent to 
> John
> or Clint, the tax and duty on re-import would be something like 20% of the
> invoice cost + shipping.  :-(
>
> More important, though, is whetehr what is the proposed use is feasible
> anyway since, as the shutter speed increases, so the effective guide 
> number
> decreases. Quite significantly.
>
> Using ASA100 film, at 1/1000 sec the maximum working distance (excluding 
> the
> effect of ambient light) is 2.5 meters at f/1.4, decreasing to less than 1
> meter at f/4.
>
> If you want to freeze rapid motion in subjects more than a meter from the
> camera, you don't need (or want) an F280/OM-4Ti - the flash duration of
> *any* other electronic flash will freeze the action for you with your 
> OM-4.
> For the likely cost of re-engineering the OM-4 you could get probably an
> electronic flash to fill Nôtre Dame!
>
> --
> Piers
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
> Of Timpe, Jim
> Sent: 09 December 2004 16:53
> To: 'olympus@xxxxxxxxxx'
> Subject: [OM] Re: OM4 to OM4t board circuit
>
>
> I'm presuming you've verified that the camera doesn't already have a new
> board?  You've done the btty check signal duration test?
>
> I defer to John/Clint as to the economic feasibility of upgrade.
>
> -----Original Message-----
> From: asud journal [mailto:asudjournal@xxxxxxxxxxxxxxxx]
> Sent: Thursday, December 09, 2004 8:54 AM
> To: olympus@xxxxxxxxxx
> Subject: [OM] OM4 to OM4t board circuit
>
>
>
> I've bought a minty OM4 for 300€ and i would to upgrade it with an OM4t
> main board circuit for alowing me to use the super fp flash sync at all
> shutter speed. Can somebody tell me if it is possible at an
> affordable price.
> Do i need super fp sync for shooting  rapid motion subjects or can i
> shooting these subjetcs with the x sync at 1/60 at night. Thanks, Loïc.
>
>> ==============================================
>> List usage info:     http://www.zuikoholic.com
>> List nannies:        olympusadmin@xxxxxxxxxx
>> ==============================================
>>
>
> ==============================================
> List usage info:     http://www.zuikoholic.com
> List nannies:        olympusadmin@xxxxxxxxxx
> ==============================================
> ==============================================
> List usage info:     http://www.zuikoholic.com
> List nannies:        olympusadmin@xxxxxxxxxx
> ==============================================
>
> ==============================================
> List usage info:     http://www.zuikoholic.com
> List nannies:        olympusadmin@xxxxxxxxxx
> ==============================================
> 



==============================================
List usage info:     http://www.zuikoholic.com
List nannies:        olympusadmin@xxxxxxxxxx
==============================================

<Prev in Thread] Current Thread [Next in Thread>
Sponsored by Tako
Impressum | Datenschutz