----- Original Message ----- 
From: "J and K Messervy"
Subject: Simplified zone exposure system for colour transparency


> I've loaded the P67 with Velvia 100F and plan to take some shots over 
> the
> weekend.  I'm still in the learning stage with the camera and metering
> prism.
>
> I've been googling exposure systems, etc and it seems a modified zone 
> system
> should work pretty well.  Basically, it seems the advice is that slide 
> film
> has a range of about zone 3 to zone 7.  Therefore, if I spot meter 
> with my
> *istDL on a spot in the scene that I want to set as the lightest tone 
> with
> detail, it will give an exposure setting for zone 5 (mid grey).  I 
> should
> therefore increase that by 3 stops (two stops to reach zone 7 and one 
> more
> to account for the DL being iso 200 and the film being iso 100) and 
> that
> should put the metered part of the scene into zone 7.  Then, providing 
> the
> scene doesn't also have shadows too deep for the film to handle, I 
> should
> get a good exposure.
>
> Am I on the right track?


Pretty close.
If there are white clouds in the sky, meter them and presume Zone VII
Why not use the meter prism?

William Robb




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