What ISO do you set Portra 400 for?

1 month 3 weeks ago #653259 by giolikokeli
and can you show me the examples? 
thank you

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1 month 3 weeks ago - 1 month 3 weeks ago #653275 by icepics
Set the ISO on the camera for 400. If it's an older film camera it may say ASA and/or DIN (that's the German equivalent for ASA, now ISO).

That's what's called the 'box speed' because it's what's listed on the box. Photographers sometimes will 'push' or 'pull' the film speed, but I haven't done that much and you probably should start out using the box speed.

You could try looking at www.filmphotographyproject.com and see if they have a short video on ISO or ASA/DIN film camera settings.

Photo Comments

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1 month 3 weeks ago - 1 month 3 weeks ago #653281 by Nikon Shooter
Setting an ISO value is not a general tweak but an 
emulsion specific preference to the response of a 
production batch of film. That's why film boxes do
have a batch number.A simple emulsion test of a
strip will guide you in this.

Once you have found your preferred ISO value, it may
be applied to that batch as base ISO. Of course, it can
be tweaked anytime to adapt to given situations but
the base value will remain as long as it is applied only
to films of the same batch number.

Light is free… capturing it is not!

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