Bellow Distance of some of the 210mm Lenses

[RedSun]

I have a Sinar 4x5 system and I just wonder which lens I should use for now. I'd like to use one with short bellow distance. The lenses are:
Fujinon W 180/5.6
Rodenstock 72 Sironar-S 210/5.6
Schneider G-Claron 210/9
Schneider Symmar-S 210/5.6

Thx.

[vinny]

huh?
the 180 is the shortest, but you know that.
the sironar-s is the sharpest.
use the g-claron
send the sironar to me

[Bob Salomon]

Flange focal lengths

210mm G Claron = 205mm
210mm Symmar-S = 200.9mm
210mm Apo Sironar-S =202mm

But! Something is wrong with your list. An Apo Sironar S covers 75° and an Apo Sironar-N covered 72° so you can not have what you listed.

Additionally the 180mm being the shorter focal length will have the shortest FFL. For example. The 210mm Apo Sironar-S has a FFL of 202mm but the 180mm Apo Sironar-S had a FFL of 177mm.

If you don't know what these numbers mean then this may help. The shorter the FFL the less extension is needed to reach infinity focus.

[RedSun]

You are right that the Sironar is the 72 N.

I have the 4x5 setup, but have not used it much. I have the 210 Symmar-S on the camera, but I have to extend the bellow very far.

I also have other lenses with shorter focal lengths. Of course they are for different uses.
Thx.