Wrong way around, a 65mm lens has a shorter focal lenght than an 80mm so focusses closer to the film plane, so because of the Inverse square law in fact f11 on the shutter scale for an 80mm lens translales to f8.9 when a 65mm lens is used.
Originally Posted by Steve Smith
Having found my 65mm SA it's impossible to make a useful image unfortunately, first the front cells won't budge but more importantly it's Linhof select and there' nothing to relate the scale to.
Here's the calculated changes:
||65mm f stop
You could make a new scale and stick it on the lens, it needs shifting so the new f11 relates to the in-between 8.9.
Hope that helps
Last edited by Ian Grant; 09-06-2012 at 03:59 AM. Click to view previous post history.