Wide angle raptar 4 1/4" f/12.5 fixed aperture barrel lens

Frank Dean,  Blacksmith

A
Frank Dean, Blacksmith

  • 5
  • 3
  • 40
Woman wearing shades.

Woman wearing shades.

  • 0
  • 1
  • 45
Curved Wall

A
Curved Wall

  • 5
  • 0
  • 77
Crossing beams

A
Crossing beams

  • 9
  • 1
  • 100
Shadow 2

A
Shadow 2

  • 5
  • 1
  • 70

Recent Classifieds

Forum statistics

Threads
198,839
Messages
2,781,683
Members
99,725
Latest member
saint_otrott
Recent bookmarks
0

knutb

Member
Joined
May 23, 2005
Messages
67
Location
Norway
Format
Multi Format
I've just received such a lens, and was wondering if anybody know anything about it. Finding data on wide angle raptars is no problem, but I haven't found much about this one. The barrel has external threads, is about 25mm long and about 32mm diameter.

I have found several references to a 4 1/4" f/6.3, and was thinking my lens might be a special version of this one - with the normal iris simply replaced by a fixed one..?.. Based on the lens elements diameter something like f/6 (if the iris is removed, that is) seems to be about correct. The f/6.3 WA raptar is supposed to cover 5x7 fully open. A 100-110mm on on 5x7 would be just about perfect! I don't (yet) have a 5x7 camera, but I will do a few tests with my 4x5 by using shift and rise in order to emulate a (cropped) 5x7. Of course the fixed aperture is somehwat limiting, but the lens was cheap and I can always use it for something - I hope :smile: Any information would be most welcome!
 

Jeremy

Member
Joined
Oct 26, 2002
Messages
2,761
Location
Denton, TX
Format
Multi Format
I have a 4 1/4" f/12.5 w.a. wollensak 5x7 lens in a shutter with variable aperture. Does anyone know if the f/6.3 is just a version of the f/12.5 which allows it the lens to be opened up to f/6.3? My f/12.5 doesn't open up to "wide open" at f/12.5: there is still quite a bit of aperture blade in the glass, but the shutter (a betax) is mechanically locked from opening any wider (though the channel is cut in the shutter to allow it to open wider).
 

spongeboy

Member
Joined
Mar 29, 2006
Messages
32
Location
currently Au
Format
Large Format
My guess is that you'd get focus shift wider open....I've got the same lens and will check it out once I find a shutter for that darn thing :smile:
 
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links.
To read our full affiliate disclosure statement please click Here.

PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Ilford ADOX Freestyle Photographic Stearman Press Weldon Color Lab Blue Moon Camera & Machine
Top Bottom