on 1/5/01 10:32 PM, K.Takeshita at [EMAIL PROTECTED] wrote:
> on 1/5/01 10:06 PM, Jeffrey Schneider at [EMAIL PROTECTED] wrote:
>
> <<Does anyone know if Pentax biases the light meters of their modern
> "consumer" cameras to overexpose, presuming that the cameras will be used for
> print film (where some overexposure is usually good)? Or, do I have a camera
> with a meter that's just a little out of adjustment?>>
>
> I've heard that camera mfrs do this. My memory is vague but z-1p for example
> is calibrated more for an overexposure (one stop sounds a bit large though)
> for negative film, while C**** (or could be N****) tend to calibrate for
> underexposure.
> But please do not rely on my memory at this time as to which mfrs do what on
> which models.
> I learned this through discussions in Japanese mail lists but it was over a
> year ago. I will try to find more accurate info if you give me several days.
>
Hi Jeff and all,
I obtained the following info from a reliable source (Nothing artificially
secret or anything. Just to indicate that the info should be accurate).
For Pentax cameras;
1. Meter setting is different at each EV, i.e., as the EV increases, the
setting is a bit over. and a bit under as the EV decreases. It is indeed
biased that way.
2. Reading the film DX code, slightly overexposure setting for the negative
films and slightly under setting for the positives. Another way of bias.
3. Measuring the 18% gray under the standard EV, the meter setting should
show standard exposure.
I can not find the info as to how other brands are doing. I will post it if
I found it.
Cheers,
Ken
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