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Pawlowski6132
1-Oct-2009, 18:03
I have this lens that came with the camera I just bought:

Schneider-Kreuznach
Symmar
1:5,6 / 210

And then in Green print:

1:12 / 370

What do the second set of aperture/focal length mean??

Also, don't LF lenses usually indicate a length, say, in inches so I can make my exposure adjustment?

thanx much!
Mike1234
1-Oct-2009, 18:18
It's a convertible lens. The lens with both cells intsalled is 210mm f/5.6 and you follow the (white?) aperture scale. With the front cell removed it's 370mm f/12 and you follow the green aperture scale. Fair warning... with the front cell removed these can be quite soft until you close down at least 3 f/stops.
Pawlowski6132
1-Oct-2009, 18:22
It's a convertible lens. The lens with both cells intsalled is 210mm f/5.6 and you follow the (white?) aperture scale. With the front cell removed it's 370mm f/12 and you follow the green aperture scale. Fair warning... with the front cell removed these can be quite soft until you close down at least 3 f/stops.

Crazy, I'm gonna try it right now.

Any thoughts regarding my second question by any chance?

thanx for your response!!!
Greg Lockrey
1-Oct-2009, 18:30
Old American and English lenses are in inches, the rest of the world uses mm.

When I got my first convertible lens in 1970 I thought that the rear element was the one you removed. It works pretty well too albeit it has a different focal length. :)
Mike1234
1-Oct-2009, 19:17
Crazy, I'm gonna try it right now.

Any thoughts regarding my second question by any chance?

thanx for your response!!!

210mm = 8.25"

370mm = 14.5"
Vick Vickery
1-Oct-2009, 20:30
For future reference, 1" = 25.4mm
Pawlowski6132
1-Oct-2009, 20:55
For future reference, 1" = 25.4mm

Duh. I didn't realize the non-metric length referred to focal length. I thought it was some other LF specific measurement.

I'm really not that dense. Seriously.

:o
Greg Lockrey
1-Oct-2009, 21:34
Duh. I didn't realize the non-metric length referred to focal length. I thought it was some other LF specific measurement.

I'm really not that dense. Seriously.

:o

You're making it harder than it is.... :)