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P3D Re photo-3d@xxxxxxxxxxxxxxxxx


  • From: Peter Homer <P.J.Homer@xxxxxxxxxxxxx>
  • Subject: P3D Re photo-3d@xxxxxxxxxxxxxxxxx
  • Date: Fri, 25 Feb 2000 09:07:08 -0700


George Themelis wrote

>
>For the same amount of light, using a faster film (400 vs 100)
>requires less exposure and this is achieved by either 1) closing
>the aperture ("smaller hole") or 2) increasing the shutter
>speed.
>
>If the shutter speed is fixed, the "hole" should be smaller.

I probably should have quoted more of Gabriel Jacob or even Carol. L's
original post. Because as Gabriel Jacob Clarified in his reply to my post
we are talking about the "Hole" over the camera photocell not the aperture.

>
>P.J.Homer writes,
>>I will have to check my own Fed (not a Fed Boy) to be shure but I would
>>have thought the hole would be larger at 400 ASA than 100 ASA letting
>>through more light so that the exposure is shorter which is what the faster
>>400 ASA film requires.
>
>Ahhh, I know I should have polled the audience, take a 50/50, or phone
>a friend! Yes, your perfectly right! I don't know what I was thinking.
>
>P.S. Just to clarify, the "hole" we're referring to, is for the light
>sensor ASA settting, and not the aperture.
                                              P.J.Homer