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Automega B-7
Autofocus  2¼"x3¼" Enlarger

Introduced: 1955
Discontinued: 1973

 

The B-7 represented a major upgrade compared to the B-5, involving not only switching to the dual rail chassis, but the autofocus system was also revised. It amounted to a medium format version of the D-3, with similar geared elevation system, autofocus tracks, and lens mount system.

Like the D-3 and other Omega autofocus enlargers, the B-7's autofocus tracks were custom profiled to match the characteristics of individual lens and lens mount combinations, and an uncalibrated track was required for manual focusing. Due to the autofocus mechanism, the B-7 was only offered with the standard length column. Most accessories were the same as for the B-8.  The condenser lamphouse was the same as the B-8, and similarly the only colorheads ever sold to fit it were the early Chromega B, Chromega B Halogen, and Super Chromega B lamphouse, which covered only up to 6x7cm. There were no adapters to allow fitting of the later dichroic heads

The B-7 had an exceptional production run of 18 years, but finally the decline in popularity of both the 6x9cm format and autofocus enlargers spelled the end in 1973, and the model was not replaced.

Used Advice: As with the other autofocus enlargers, check how well that  the autofocus tracks, lensmounts and negative carriers that come with the unit will meet your requirements, as these items can add greatly to the cost if purchased separately.  Units fitted with the Chromega lamphouses are usually not worth considering.


Enlargers | Major Components | Negative Carriers | Lens Mounts | Accessories | Lamps

Enlargers

 

Status

      250 B-7/C Condenser Enlarger  D
      251 B-7/C Condenser Enlarger with Filter Drawer  (later 403-002) D
      252 B-7/O with Omegalite Lamphouse  D
 

Major Components

403-001 B-7 Chassis only D
    7226 B-7/8 Condenser Lamphouse D
    7225 B-7/8 Condenser Lamphouse w/Filter Drawer  (later 403-801) D
    7226 Omegalite B Lamphouse  D
    1103 Chromega B Lamphouse with Power Supply  (6x6cm max.)   D
    1107 Omega Sphere B Lamphouse with Power Supply  (6x6cm max.)   D
403-611 Chromega B Halogen Lamphouse with Power Supply  (6x6cm max.) D
403-820 Super Chromega B Lamphouse with Power Supply  (6x7cm max.) D
 

Negative Carriers

Spring Hinged, Rapid Shift, Glassless  
423-162 Minox format  D
423-177 35mm single frame (half frame) D
423-163 35mm (full frame) D
423-176 126 Instamatic  D
423-164 4x4cm (127 format) D
423-165 2¼"x2¼" (6x6cm)  D
423-166 2¼"x2¾" (6x7cm)  D
423-167 Linhof Ideal 120 D
423-168 Linhof Ideal 70mm D
423-169 2¼"x3¼" roll film (6x9cm)  D
423-170 2¼"x3¼" sheet film (6x9cm)  D

 (Note: Current Beseler 23C carriers will fit the B-7 enlarger with slight modification)

 
Transparency Carriers  
423-171 Mounted 35mm Transparency

D

423-172 Unmounted 35mm Transparency with slot for gray scale

D

(Note: Current Beseler 23C carriers will fit the B-7 enlarger with slight modification)

 
Spring Hinged, Rapid Shift, Glass  
423-152 35mm Full Frame D
423-153 2¼"x2¼" (6x6cm) D
423-154 2¼"x3¼" roll film (6x9cm) D
 
100' Spool Carriers  

423-173

100' Spool Glassless Rapid Shift (custom order, sized as specified) D
 
Electron Microscope Plate Carrier  

423-174

Carrier for 2"x10" Electron Microscope Plates D
 
For Distortion Correction Attachment  (429-079)  
423-902 35mm D
423-903 2¼"x2¼" (6x6cm) D
423-904 2¼"x3¼" roll film (6x9cm) D
 
Anti Newton Glass  

473-097

2¼"x3¼" for 423-154, pair O
 
Scratch Suppression Carrier  
    7265 Refractamatic Negative Carrier with Refractasil D
    7266 Refractasil 4 oz. Bottle  (later 479-001) D
 

Lens Mounts

421-011 Flat Lens Mount with 39mm Leica thread D
421-149 Recessed Lens Mount for 35mm Omegaron D
421-150 Flat Mount for 50mm lens  (replaced by 421-170) DR
421-151 Lens Cone 1½" for 75-80mm lenses  (replaced by 421-188) DR
421-152 Lens Cone 2" for 90-105mm lenses  (replaced by 421-172) DR
 
Autofocus Mount and Track Kits  
     1250 50mm f4.5 Wollensak Raptar  (includes supplementary condenser) D
     3280 50mm f4.5 Wollensak Raptar  (for Omegalite model) D
     1260 50mm f4.5 Kodak Ektar  (includes supplementary condenser) D
     3295 50mm f4.5 Kodak Ektar  (for Omegalite model) D
422-301 For 50mm Omegaron  (includes supplementary condenser) D
422-302 For 50mm Componon  (includes supplementary condenser) D
422-303 For 50mm Rodagon  (includes supplementary condenser) D
     1251 75mm f4.5 Wollensak Raptar  (includes supplementary condenser) D
     3281 75mm f4.5 Wollensak Raptar  (for Omegalite model) D
     1261 75mm f4.5 Kodak Ektar  (includes supplementary condenser) D
     3296 75mm f4.5 Kodak Ektar  (for Omegalite model) D
422-304 For 75mm Omegaron  (includes supplementary condenser) D
422-305 For 80mm Componon  (includes supplementary condenser) D
422-308 For 80mm Rodagon  (includes supplementary condenser) D
     1252 90mm f4.5 Wollensak Raptar  (for condenser model) D
     3282 90mm f4.5 Wollensak Raptar  (for Omegalite model) D
     1262 90mm f4.5 Kodak Ektar  (for condenser model) D
     3298 90mm f4.5 Kodak Ektar  (for Omegalite model) D
422-306 For 90mm Omegaron D
422-004 Uncalibrated Track  (ordered for specific focal length) D
 

Lens Discs

421-000 Blank Lens Disc DL
421-001 Flat Lens Disc with 39mm hole DL
421-002 Flat Lens Disc with 32.5mm hole DL
421-003 Flat Lens Disc with 25mm hole DL
421-009 Lens Disc for 90mm Kodak Ektar lens D
421-148 Recessed Lens Disk for 28mm Componon D
421-010 39mm Leica thread Lock Ring DL
 

Accessories

404-846 Voltage Stabilizer H400 for use with 403-820 Chromega B lamphouse D
429-003 Red Safety Filter (early type with mounting post) D
429-004 Red Safety Filter (use with 429-029) DL
429-013 Portrait Diffusion Grid (use with 429-029) DL
429-021 3-Color Filter Holder (for additive color printing or separations) DL
429-023 Filter Holder for Variable Contrast filters D
429-029 Under Lens Filter Holder for red and variable contrast filters DL
429-070 Wall Projection Attachment (for mural size enlargements) DL
429-071 Microphotography Attachment D
429-075 Reflex Copying Attachment D
429-078 Electric Shutter for use with Omegalite lamphouse D
429-079 Distortion Correction Attachment  (see carrier section for carriers)  D
429-081 Masking Attachment for condenser models D
429-082 Masking Attachment for Omegalite model D
429-091 Heavy Duty Wall Mount (early type) D
429-092 Heavy Duty Wall Mount  DL
429-088 Copy Lights, 4 lamp set D
429-084 Auxiliary Focus Attachment (for small enlargements and reductions) D
429-101 Magnification Reference Scale for 50/75mm lenses DL
429-102 Magnification Reference Scale for 90/135mm lenses D
429-141 Adapter Kit for fitting 403-611 or 403-820  lamphouse to B7 chassis D
429-184 Light Integrating Sphere Type BB  (2¼x2¾)  (Super Chromega B) D
429-185 Light Integrating Sphere Type BA  (35mm)  (Super Chromega B) D
429-200 One Piece 0-180 Filter - Cyan for Super Chromega B lamphouse D
429-201 One Piece 0-180 Filter - Magenta for Super Chromega B lamphouse D
429-202 One Piece 0-180 Filter - Yellow for Super Chromega B lamphouse D
429-205 Type 2B/UV Absorption Filter D
429-206 Pale Yellow Color Compensating Filter D
472-011 Thin Supplementary Condenser 5/8" for 75-80mm lenses D
472-012 Thick Supplementary Condenser 13/16" for 50mm and shorter lenses DL
472-103 Single Condenser 411/16" dia. D
473-101 Heat Absorbing Glass 3½" dia. D
473-109 Bi-sected Heat Absorbing Glass 2.7" for Super Chromega B lamphouse D
473-012 Ground Glass 3½" dia. DL
473-013 Ground Glass 4¾" dia. D
473-002 Opal Glass 3½" dia. DL
473-003 Opal Glass 4¾" dia. DL
479-012 Transparent Dust Cover  D
S03002 B7 Enlarger Instruction Manual C
 

Lamps

471-001 PH111A Opal Enlarger Lamp, 75W 125V for condenser lamphouse C
471-011 Circline Lamp 8¼", 115V 22W, white, for Omegalite lamphouse  C*
471-012 Circline Lamp 8¼", 115V 22W, blue, for Omegalite lamphouse  C*
471-021 No. 100T8/1 SC, 20V 100W  for early Chromega B lamphouse C
471-027 Tungsten Halogen Lamp, 150W 24V for 403-611 and 403-820  lamphouses C
 

 

 
 

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