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Medium format view cameras & bellows factor

pkr1979

Member
Joined
Jun 25, 2019
Messages
567
Location
Oslo
Format
Multi Format
Hi fellas,

Do you calculate the bellows factor when shooting medium format with a view camera - like the Horseman VH?

Cheers
Peter
 

Dan Fromm

Member
Joined
Mar 23, 2005
Messages
6,902
Format
Multi Format
Hi fellas,

Do you calculate the bellows factor when shooting medium format with a view camera - like the Horseman VH?

Cheers
Peter

Only when working closeup. Otherwise it isn't necessary.
 

wiltw

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Oct 4, 2008
Messages
6,621
Location
SF Bay area
Format
Multi Format
At 1:1 (extension = FL) simply add 2EV
At 1:2 (extension = 0.5*FL) simply add 1EV

Rule applies regardless of format.
 

benveniste

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Nov 1, 2007
Messages
533
Format
Multi Format
Effective aperture = (1 + m)*f, where m is the magnification and f is the physical aperture of the lens. That said, if your lens has floating elements, such as the Pentax 120mm f/4, the physical aperture changes with focus distance.