The 1.55V alkaline battery (625A, 625U) initially can cause 2 stops
underexposure, but is non linear. Even if meter is adjusted for that
somewhat (say at BV12, asa 100, 1/125 f5.6) meter will be about 1/2 stop
over at BV9, and 1/2 under at BV15.
___________________________________
John Hermanson | CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121 | www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html
On 7/6/2011 12:38 PM, Jeff Keller wrote:
> Could it be that your OM-1n wasn't adapted to silver oxide batteries, just
> tweaked enough that non-mercury batteries didn't completely destroy the
> exposure?
>
> Jeff Keller
>
> -----Original Message-----
> From: Fernando Gonzalez Gentile [mailto:fgonzalezgentile@xxxxxxxxx]
> Subject: Re: [OM] a flower?, or Zuiko 300mm 4,5 bokeh
>
> Thanks, guys :-) - it could have been better, Ken.
> I made 2 more shots, at f/5,6 and f/8.
> They showed better exposed, which lead me to think this _LNIB_ black
> OM 1n, is not exposing quite exactly at 1/250, and therefore neither
> on 1/500 nor on 1/1000.
>
> The meter is accurate, the SS might not be.
> Sending it to John is not a problem, but getting it back through
> Customs may be so.
>
> Need more evidence, nonetheless - but I suspect I'm right :-(
>
> How frequently is this inaccuracy observed / show up?
>
> Thanks for looking :-)
>
> Fernando.
>
>
>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|