Originally Posted by jsrockit
I haven't shot with this, but I can't imagine a 112mm equiv lens on small sensorwill act like a 180mm lens on a big neg.
i'm comparing the 75mm on aps-c to the 180mm when they have the same angle of view on the long side (see the "horizontal" column here: http://www.hasselbladhistorical.eu/HW/HWequifoc.aspx
), where a 180mm on 6x6 is like a 115mm lens on 35mm. a 75mm is like a 112.5mm.
according to the depth of field calculator:
fuji w/75mm f1.8 focused at 10ft = 4.56 inches
hasselblad w/180mm f4 focused at 10ft = 3.84 inches
a 75mm at f1.5 would give the same dof as the 180/4, so it's only a half stop difference.
i'm mostly interested because the 75/1.8 heliar and 180/4 cf are basically the same price, and kirk tuck is always saying that a hasselblad with the 180/4 is a sweet portrait rig.