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Re: [OM] [OT] - Advice wanted about 5D2

Subject: Re: [OM] [OT] - Advice wanted about 5D2
From: James King <jking@xxxxxxxxxxxxxx>
Date: Wed, 04 Aug 2010 10:35:06 +0100
  in my experience the 24mm and 35mm shifts will throw the metering out 
when shifted on any camera with a light sensor behind the mirror. This 
is because the light rays no longer enter the mirror chamber 
perpendicular  to the mirror and since the mirror acts as a polariser it 
cuts off much more of the light than the metering system expects.
you can experiment with the metering errors when shifting easily, get a 
large grey card (or expo disk) and note the suggested exposure 
non-shifted, then start to shift and quite quickly the camera will want 
to add more light up to around 2 stops and the result is massive over 
exposure....
For Olympus film users  the "off the film" monitoring in auto 
automatically corrects for this. Digital has no similar feature. I meter 
non-shifted (or use a hand held light meter) and then lock the exposure 
or use manual and then shift. I add 1/3rd or 2/3rds of a stop depending 
upon how much i shift the lens.. this is just to compensate for light 
fall off when shifting.



On 04/08/2010 08:11, SwissPace wrote:
> Sorry for the confusion, but I was talking about using the zuiko OM
> 35/2.8 shift lens.
>
> On 04/08/2010 01:25, Chuck Norcutt wrote:
>> I also did a double take on the word "shift" but here I think he was
>> talking about the shift in Program mode.  To shift in Program mode on
>>
>> Jeff Keller wrote:
>>
>>> Shift? ... The exposure readings on the 5D2 are way off with shift lenses.
>>> The max available, -EV2, won't even compensate enough. I have to put the
>>>



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