Medium Format120
advanced
Discontinued
Bronica GS-1
1983-2000
Budget 6x7 medium format
Format
120
Shutter
1/500
Max speed
Metering
None
Mechanical
Weight
1750g
Best For
- Budget 6x7 medium format
- Studio work
- Portrait photography
- Those wanting modular 6x7
Features
- 6x7 format (like RB67/Pentax 67)
- Modular system
- Leaf shutter in lenses
- Interchangeable backs
- Multiple format backs available
Limitations
- Bronica no longer exists
- Parts very scarce
- Less common than RB67
- Limited service options
Common Issues to Check
- Lens shutter failures
- Back interlock problems
- Light seals
- Mirror mechanism wear
Buying Guide
The GS-1 was Bronica's 6x7 modular system competing with the Mamiya RB67. Excellent Zenzanon PG lenses. Less common than the RB67 so parts and service are harder to find. Test thoroughly before buying. Good budget option for 6x7 format.
Pricing
Typical Range£500 - £900
Excellent Condition~£1100
Complete kit. Rarer than RB67
Prices as of 2025-12. UK market, may vary.
Last verified: Jan 2026Report an error