• Welcome to Photrio!
    Registration is fast and free. Join today to unlock search, see fewer ads, and access all forum features.
    Click here to sign up

Medium format view cameras & bellows factor

pkr1979

Member
Joined
Jun 25, 2019
Messages
579
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
 
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.
 
At 1:1 (extension = FL) simply add 2EV
At 1:2 (extension = 0.5*FL) simply add 1EV

Rule applies regardless of 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.