Re: Exposure (was: Rangefinder etc)

[Jim MacKenzie <dusyk&barlow@xxxxxxxxxxxxxxxxxxxxxx>]

Willem-Jan Markerink wrote:

> Nope, but taking pic's without at least a 25 filter is wasting film.
> And for metering through such a filter, 400 ASA on the camera often works.
> Darker filters screw up internal meters, often due to IR-block
> filters for both AF and AE. External meters however still work with
> dark filters; my Gossen Sixtomat Digital is almost on spec for every
> filter up to 87C. So 400 ASA is my holy starting point!....;-))

Infrared light varies so much and you can't base exposure that accurately
on ambient light.  I use EI 200 as a base and do a 5-stop bracket in 1-stop
increments, two stops on either side.  That gets 7 images on a 36-exposure
roll with one waste frame.  I may use a lot of film but you just can't
go on experience much with infrared illumination, and I almost always
get an acceptable frame.

Jim
-- 
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|Jim MacKenzie                  Dusyk & Barlow Insurance Brokers Ltd.|
|Insurance Broker                                  4615 Albert Street|
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