Dear ?
Mine came with a grey card with instructions on one side and blank on the
other..... Instaructions said something like ....must be in place during
demonstration..... must be removed when using film for taking pics.....
The grey should be 18 0rey .... I believe.... There's a marked difference
with and without the card....as can be observed during the metering....
The beauty of TTL and OTF .......
Peace
TM
-----Original Message-----
From: Gregg Iverson <giverson@xxxxxxxxxxxxx>
To: olympus@xxxxxxxxxxxxxxx <olympus@xxxxxxxxxxxxxxx>
Date: Tuesday, October 17, 2000 7:52 AM
Subject: Re: [OM] Difference in film reflectance
>My 4T came with a rectangular piece of plastic in place that is almost like
>the plastic of a milk jug in color. I don't think that it resembles any
>film I have seen. My point is that as long as you consistently use the
>same material, with the same rate of reflectance, you should get repeatable
>results.
>
>Gregg
>
>>I am wondering if there is any difference in the amount
>>of light reflected in exposed film vs. un-exposed film.
>>For example, when testing one of the OTF models (OM2 to
>>OM4(T(i))), does it matter what type of film is put in
>>the film chamber during the test. In my thinking, there
>>are (at least) the following possibilities:
>> Un-exposed film [a fresh roll every time, expensive]
>> Exposed (but un-processed) film [if I use the same
>> roll of film to test several bodies, this is what
>> I'll end up with]
>> Processed un-exposed film [this is just clear film]
>> Processed exposed film [in this case, does it matter
>> what is on the film?]
>>
>>So does it matter which type of film I use to check out
>>the OTF meter accuracy of an unknown body? Thanks.
>
>
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